Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
106 results · page 2 of 3
Jul 1, 2026Multiple unbounded alloca() calls in the PulseAudio protocol server.CVE-2026-14330 · Other software · Red Hat · reported by Red HatMedium 5.5
Multiple unbounded alloca() calls in the PulseAudio protocol server.
- Product
- Red Hat Enterprise Linux 9
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-50560 · Other software · netty · reported by GitHubMedium 6.9
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called `SETTINGS_MAX_HEADER_LIST_SIZE`. When a client sends that setting to Netty, it appears that Netty will behave as follows: read the request; proxy the request to the origin; attempt to produce a response; and create an exception while writing the headers for the response. Functionally, this should be similar to the http2 reset attack, but with a different on-the-wire signature. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-50020 · Other software · netty · reported by GitHubMedium 5.3
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, `HttpObjectDecoder` skips every byte for which `Character.isISOControl(b)` is `true` (0x00–0x1F and 0x7F) as well as all whitespace. RFC 9112 §2.2 only asks servers to ignore empty CRLF lines preceding the request-line — a carefully scoped robustness allowance intended to handle HTTP/1.0 POST workarounds. Silently absorbing NUL bytes, SOH, STX, and other non-CRLF control characters goes significantly beyond this, and can be exploited for request-boundary confusion in pipelined or multiplexed transports where a front-end component treats those bytes differently. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-50011 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, RedisArrayAggregator pre-allocates ArrayList with initial capacity equal to the RESP array element count declared in an array header. That count is taken from the wire before the corresponding child messages exist. A small malicious header can claim a huge initial capacity. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-50010 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SimpleTrustManagerFactory.engineGetTrustManagers() and related paths wrap any user-supplied plain X509TrustManager in X509TrustManagerWrapper, which extends X509ExtendedTrustManager but implements the 3-arg checkServerTrusted(chain, authType, SSLEngine) by discarding the SSLEngine and calling the 2-arg delegate. Because the object now IS an X509ExtendedTrustManager, neither SunJSSE's internal AbstractTrustManagerWrapper nor Netty's own OpenSslX509TrustManagerWrapper will re-wrap it to add endpoint-identification. Consequently, even though Netty 4.2 sets endpointIdentificationAlgorithm="HTTPS" by default, a client built with `SslContextBuilder.forClient().trustManager(somePlainX509TrustManager)` performs no hostname verification at all. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-50009 · Other software · netty · reported by GitHubMedium 4.8
Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, Netty QUIC exposes the stateless reset token on the network path when using the default HMAC-based connection-ID and stateless-reset-token generators. The reset token for the server's current source connection ID can be derived from bytes that appear as the connection ID in QUIC headers after a source-CID rotation. An on-path attacker observing the headers can use the token to perform a Denial of Service by sending a spoofed Stateless Reset packet. Version 4.2.15.Final patches the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-48748 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-48059 · Other software · netty · reported by GitHubHigh 8.7
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, the HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nested `PP2_TYPE_SSL` TLVs (type-length-value records) at depth two or greater. The leak occurs on the successful parse path — no exception is thrown, the message fires downstream, the decoder removes itself, and the application releases the `HAProxyMessage` normally. Yet the underlying cumulation buffer (a pooled, potentially direct `ByteBuf` allocated by the channel) remains permanently pinned. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-48043 · Other software · netty · reported by GitHubMedium 5.3
Netty is a network application framework for development of protocol servers and clients. In netty-codec-http2 prior to versions 4.1.135.Final and 4.2.15.Final, the `DelegatingDecompressorFrameListener` class orchestrates HTTP/2 decompression by embedding a per-stream `EmbeddedChannel` that runs the appropriate decompression codec (gzip, deflate, zstd) and forwards decompressed chunks to a wrapped listener. Each decompressed chunk is a pooled `ByteBuf` handed to an anonymous `ChannelInboundHandlerAdapter` tail handler, which becomes the sole owner responsible for releasing it. A remote peer could send frames that would result in the flow-controller throwing and so trigger a resource leak which at the end might take down the whole JVM due OOME. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-48006 · Other software · netty · reported by GitHubHigh 8.7
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, the RedisArrayAggregator handler permanently leaks pooled direct-memory buffers when a Redis pipeline connection closes before a RESP array aggregate completes. The handler retains child messages in per-handler state (`depths` field) but defines no `channelInactive`, `handlerRemoved`, or `exceptionCaught` method to release them when the pipeline tears down. Because the leaked buffers are slices of `PooledByteBufAllocator` chunks, they prevent those chunks from being returned to the JVM-wide direct-memory pool. Repeated connection churn by any network peer monotonically drains this shared pool, eventually causing allocation failures on all Netty channels in the process. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-47691 · Other software · netty · reported by GitHubHigh 8.7
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's `DnsResolveContext` insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains (like `.co.uk`). In `io.netty.resolver.dns.DnsResolveContext.AuthoritativeNameServerList#add` method accepts any NS record from the AUTHORITY section as long as the record's name is a suffix of the questionName. Subsequently, the `handleWithAdditional` method caches the associated A records from the ADDITIONAL section directly into the `authoritativeDnsServerCache` under the parent domain's key. This bypasses standard bailiwick rules, where a server authoritative for a subdomain should not be trusted to provide authoritative records for its parent. The poisoned cache is then used for all future resolutions under the parent domain's key. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-47244 · Other software · netty · reported by GitHubMedium 5.3
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, DefaultHttp2Connection.DefaultEndpoint initialises maxActiveStreams/maxStreams to Integer.MAX_VALUE, and Http2Settings never inserts SETTINGS_MAX_CONCURRENT_STREAMS by default (Http2Settings.java:305-307 only clamps a user-supplied value). Unless the application explicitly calls initialSettings().maxConcurrentStreams(n), a Netty HTTP/2 server advertises no limit and enforces none locally. Each open stream allocates a DefaultStream object, PropertyMap slots, flow-controller state and IntObjectHashMap entry; with ~2^30 permissible odd stream IDs a single TCP connection can create hundreds of thousands of long-lived stream objects. This is also the precondition for CVE-2023-44487-style Rapid-Reset amplification, where the absence of a low concurrent cap multiplies backend work. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-46340 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. In versions of netty-transport-sctp prior to 4.1.135.Final and 4.2.15.Final, for each non-complete SctpMessage fragment the handler does `fragments.put(streamId, Unpooled.wrappedBuffer(frag, byteBuf))`, wrapping the previous accumulator and the new slice into a *new* CompositeByteBuf every time. After N fragments the accumulator is an N-deep chain of composites, each holding references and component arrays; readableBytes()/getBytes() on the final buffer recurse N levels. There is no limit on N, on total bytes, or on the number of streamIdentifiers an attacker can open (each gets its own map entry). A peer that never sets the `complete` flag can grow this structure indefinitely from tiny 1-byte DATA chunks. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-45674 · Other software · netty · reported by GitHubHigh 8.7
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-45673 · Other software · netty · reported by GitHubMedium 6.8
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning (Kaminsky attack). Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-45536 · Other software · netty · reported by GitHubMedium 4
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, netty_unix_socket_recvFd sets msg_control to `char control[CMSG_SPACE(sizeof(int))]` (line 940) — 24 bytes on 64-bit Linux. A peer-sent SCM_RIGHTS cmsg carrying two ints has cmsg_len = CMSG_LEN(8) = 24, which fits exactly with no MSG_CTRUNC, so the kernel installs both fds in the receiving process. The subsequent check `cmsg->cmsg_len == CMSG_LEN(sizeof(int))` (line 972, expected 20) fails, the branch that would read the fd is skipped, and neither installed fd is closed. The for(;;) loop calls recvmsg again (non-blocking → EAGAIN → Java maps to 0 → read loop exits normally), leaving two leaked fds per message. There is no MSG_CTRUNC handling. Reachable via Epoll/KQueue DomainSocketChannel when the application opts into DomainSocketReadMode.FILE_DESCRIPTORS (non-default). Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-45416 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode() reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates `ctx.alloc().buffer(handshakeLength)` (line 161). The guard at line 140 is `handshakeLength > maxClientHelloLength && maxClientHelloLength != 0`, and the commonly-used SniHandler/AbstractSniHandler constructors (SniHandler(Mapping), SniHandler(AsyncMapping), AbstractSniHandler()) pass maxClientHelloLength=0 and handshakeTimeoutMillis=0, so the length guard is disabled and no timeout is scheduled. A 16 MiB request exceeds the default pooled chunk size and becomes a huge/unpooled allocation performed immediately. The buffer is retained in the handler until the channel closes. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44894 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. NoQuicTokenHandler is the tokenHandler used when the application does not set one. Prior to version 4.2.15.Final, its writeToken() returns false (server will not send Retry — acceptable), but validateToken() unconditionally `return 0`. In QuicheQuicServerCodec.handlePacket(), a non-negative return from validateToken() is interpreted as 'token is valid, ODCID starts at offset 0', causing the server to call quiche_accept as if the client's address had been validated by a Retry round-trip. Per RFC 9000 §8.1, a validated address lifts the 3× anti-amplification send limit. Thus any attacker who includes ANY non-empty token bytes in an Initial packet — with a spoofed victim source IP — causes the Netty server to treat the victim as validated and reflect full-size handshake flights (certificates, etc.) toward it without the 3× cap. The correct 'no token handler' semantics would be to return -1 (invalid) so the normal un-validated path and amplification limit apply. Version 4.2.15.Final patches the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44893 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 12, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44892 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 11, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44890 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple connections without `\r\n`. This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 11, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44250 · Other software · netty · reported by GitHubHigh 7.5
Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending a crafted Redis payload with deeply nested arrays. This forces the server to allocate a massive number of state objects and collections, leading to memory exhaustion and an OutOfMemoryError. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 11, 2026Netty is a network application framework for development of protocol servers and clients.CVE-2026-44249 · Other software · netty · reported by GitHubHigh 8.1
Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 11, 2026mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management.CVE-2026-47250 · Other software · Flux159 · reported by GitHubMedium 6.1
mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Prior to version 3.7.0, the kubectl_generic tool in mcp-server-kubernetes passes user-supplied flags directly to kubectl without any allowlist, enabling a privilege escalation attack within Kubernetes environments. An attacker who already has limited cluster or codebase access, for example, a developer with pod-deployment permissions but not cluster-admin credentials, can plant a single structured JSON line in an application's log output. When an operator with a privileged kubeconfig uses the MCP server to read those logs and their AI agent follows the injected instruction, kubectl_generic is called with --server=https://attacker.example.com and --insecure-skip-tls-verify=true. kubectl sends all API requests, including the Authorization: Bearer <token> header from the operator's kubeconfig to the attacker's endpoint. The captured token can then be replayed directly against the real Kubernetes API server, granting the attacker the full RBAC permissions of the operator's service account. This issue has been patched in version 3.7.0.
- Product
- mcp-server-kubernetes
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 11, 2026mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management.CVE-2026-46519 · Other software · Flux159 · reported by GitHubHigh 8.8
mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Prior to version 3.6.0, mcp-server-kubernetes exposes three environment variables (ALLOW_ONLY_READONLY_TOOLS, ALLOW_ONLY_NON_DESTRUCTIVE_TOOLS, ALLOWED_TOOLS) documented as access controls for restricting which Kubernetes operations are available. These controls are enforced at the tool discovery layer (tools/list) but not at the execution layer (tools/call). Any client that knows a tool name can invoke it directly regardless of the configured restriction mode. The access control was effectively cosmetic. This issue has been patched in version 3.6.0.
- Product
- mcp-server-kubernetes
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 27, 2026An issue in the /store/items/search endpoint of Agent Protocol server commit e9a89f allows attackers to cause a Denial of Service (DoS) via a crafted POST requeCVE-2026-30350 · Other software · reported by MITREHigh 7.5
An issue in the /store/items/search endpoint of Agent Protocol server commit e9a89f allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgithub.com
Apr 21, 2026excel-mcp-server is a Model Context Protocol server for Excel file manipulation.CVE-2026-40576 · Other software · haris-musa · reported by GitHubCritical 9.4
excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode (the documented way to use this server remotely), an unauthenticated attacker on the network can read, write, and overwrite arbitrary files on the host filesystem by supplying crafted filepath arguments to any of the 25 exposed MCP tool handlers. The server is intended to confine file operations to a directory set by the EXCEL_FILES_PATH environment variable. The function responsible for enforcing this boundary — get_excel_path() — fails to do so due to two independent flaws: it passes absolute paths through without any check, and it joins relative paths without resolving or validating the result. Combined with zero authentication on the default network-facing transport and a default bind address of 0.0.0.0 (all interfaces), this allows trivial remote exploitation. This vulnerability is fixed in 0.1.8.
- Product
- excel-mcp-server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 15, 2026mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management.CVE-2026-39884 · Other software · Flux159 · reported by GitHubHigh 8.3
mcp-server-kubernetes is a Model Context Protocol server for Kubernetes cluster management. Versions 3.4.0 and prior contain an argument injection vulnerability in the port_forward tool in src/tools/port_forward.ts, where a kubectl command is constructed via string concatenation with user-controlled input and then naively split on spaces before being passed to spawn(). Unlike all other tools in the codebase which correctly use array-based argument passing with execFileSync(), port_forward treats every space in user-controlled fields (namespace, resourceType, resourceName, localPort, targetPort) as an argument boundary, allowing an attacker to inject arbitrary kubectl flags. This enables exposure of internal Kubernetes services to the network by injecting --address=0.0.0.0, cross-namespace targeting by injecting additional -n flags, and indirect exploitation via prompt injection against AI agents connected to the MCP server. This issue has been fixed in version 3.5.0.
- Product
- mcp-server-kubernetes
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 9, 2026Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools.CVE-2026-35577 · Other software · apollographql · reported by GitHubMedium 6.8
Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run on localhost without additional authentication or network-level controls, this could potentially allow a malicious website—visited by a user running the server locally—to use DNS rebinding techniques to bypass same-origin policy restrictions and issue requests to the local MCP server. If successfully exploited, this could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the local user. This issue is limited to HTTP-based transport modes (StreamableHTTP). It does not affect servers using stdio transport. The practical risk is further reduced in deployments that use authentication, network-level access controls, or are not bound to localhost. This vulnerability is fixed in 1.7.0.
- Product
- apollo-mcp-server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 7, 2026MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients.CVE-2026-35568 · Other software · modelcontextprotocol · reported by GitHubHigh 7.6
MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to 1.0.0, the java-sdk contains a DNS rebinding vulnerability. This vulnerability allows an attacker to access a locally or network-private java-sdk MCP server via a victims browser that is either local, or network adjacent. This allows an attacker to make any tool call to the server as if they were a locally running MCP connected AI agent. This vulnerability is fixed in 1.0.0.
- Product
- java-sdk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 31, 2026MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients.CVE-2026-34237 · Other software · modelcontextprotocol · reported by GitHubMedium 6.1
MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1.
- Product
- java-sdk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 27, 2026MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients.CVE-2026-33946 · Other software · modelcontextprotocol · reported by GitHubHigh 8.2
MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamable_http_transport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's Server-Sent Events (SSE) stream and intercept all real-time data. Version 0.9.2 contains a patch.
- Product
- ruby-sdk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 25, 2026Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).CVE-2026-27735 · Other software · modelcontextprotocol · reported by GitHubMedium 6.4
Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). In mcp-server-git versions prior to 2026.1.14, the git_add tool did not validate that file paths provided in the files argument were within the repository boundaries. Because the tool used GitPython's repo.index.add() rather than the Git CLI, relative paths containing `../` sequences that resolve outside the repository were accepted and staged into the Git index. Users are advised to upgrade to 2026.1.14 or newer to remediate this issue.
- Product
- servers
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 4, 2026MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients.CVE-2026-25536 · Other software · modelcontextprotocol · reported by GitHubHigh 7.1
MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.
- Product
- typescript-sdk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 17, 2025Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).CVE-2025-68143 · Other software · modelcontextprotocol · reported by GitHubMedium 6.5
Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). In mcp-server-git versions prior to 2025.9.25, the git_init tool accepted arbitrary filesystem paths and created Git repositories without validating the target location. Unlike other tools which required an existing repository, git_init could operate on any directory accessible to the server process, making those directories eligible for subsequent git operations. The tool was removed entirely, as the server is intended to operate on existing repositories only. Users are advised to upgrade to 2025.9.25 or newer to remediate this issue.
- Product
- servers
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 2, 2025MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients.CVE-2025-66414 · Other software · modelcontextprotocol · reported by GitHubHigh 7.6
MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. Prior to 1.24.0, The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the user in those limited circumstances. Note that running HTTP-based MCP servers locally without authentication is not recommended per MCP security best practices. This issue does not affect servers using stdio transport. This vulnerability is fixed in 1.24.0.
- Product
- typescript-sdk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 15, 2025hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants.CVE-2025-59155 · Other software · yuna0x0 · reported by GitHubMedium 6.9
hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants. From 1.4.0 to before 1.5.0, hackmd-mcp contains a server-side request forgery (SSRF) vulnerability when the server is run in HTTP transport mode. Arbitrary hackmdApiUrl values supplied via the Hackmd-Api-Url HTTP header or a base64-encoded JSON query parameter are accepted without validation, allowing attackers to redirect outbound API requests to internal network services, access internal endpoints, perform network reconnaissance, and bypass network access controls. The stdio transport mode is not affected because it only accepts stdio requests. The issue is fixed in version 1.5.0, which enforces allowed endpoints and supports the ALLOWED_HACKMD_API_URLS environment variable. Users should update to 1.5.0 or later or apply documented mitigations such as switching to stdio mode, restricting outbound network access, or filtering the Hackmd-Api-Url header and related query parameter via a reverse proxy.
- Product
- hackmd-mcp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 4, 2025Markdownify is a Model Context Protocol server for converting almost anything to Markdown.CVE-2025-58358 · Other software · zcaceres · reported by GitHubHigh 7.5
Markdownify is a Model Context Protocol server for converting almost anything to Markdown. Versions below 0.0.2 contain a command injection vulnerability, caused by the unsanitized use of input parameters within a call to child_process.exec, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges. The server constructs and executes shell commands using unvalidated user input directly within command-line strings. This introduces the possibility of shell metacharacter injection (|, >, &&, etc.). This issue is fixed in version 0.0.2.
- Product
- markdownify-mcp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 4, 2025Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.CVE-2025-58057 · Other software · netty · reported by GitHubMedium 6.9
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 3, 2025Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients.CVE-2025-58056 · Other software · netty · reported by GitHubLow 2.9
Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients. In versions 4.1.124.Final, and 4.2.0.Alpha3 through 4.2.4.Final, Netty incorrectly accepts standalone newline characters (LF) as a chunk-size line terminator, regardless of a preceding carriage return (CR), instead of requiring CRLF per HTTP/1.1 standards. When combined with reverse proxies that parse LF differently (treating it as part of the chunk extension), attackers can craft requests that the proxy sees as one request but Netty processes as two, enabling request smuggling attacks. This is fixed in versions 4.1.125.Final and 4.2.5.Final.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddatatracker.ietf.orggithub.com
Jul 8, 2025node-code-sandbox-mcp is a Node.js–based Model Context Protocol server that spins up disposable Docker containers to execute arbitrary JavaScript.CVE-2025-53372 · Other software · alfonsograziano · reported by GitHubHigh 7.5
node-code-sandbox-mcp is a Node.js–based Model Context Protocol server that spins up disposable Docker containers to execute arbitrary JavaScript. Prior to 1.3.0, a command injection vulnerability exists in the node-code-sandbox-mcp MCP Server. The vulnerability is caused by the unsanitized use of input parameters within a call to child_process.execSync, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges on the host machine, bypassing the sandbox protection of running code inside docker. This vulnerability is fixed in 1.3.0.
- Product
- node-code-sandbox-mcp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 2, 2025Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).CVE-2025-53110 · Other software · modelcontextprotocol · reported by GitHubHigh 7.3
Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files in cases where the prefix matches an allowed directory. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.
- Product
- servers
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 2, 2025Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).CVE-2025-53109 · Other software · modelcontextprotocol · reported by GitHubHigh 7.3
Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.
- Product
- servers
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Nov 12, 2024Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.CVE-2024-47535 · Other software · netty · reported by GitHubMedium 5.5
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crashes. This vulnerability is fixed in 4.1.115.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 8, 2024Remote Desktop Protocol Server Remote Code Execution VulnerabilityCVE-2024-43582 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Remote Desktop Protocol Server Remote Code Execution Vulnerability
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 25, 2024Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.CVE-2024-29025 · Other software · netty · reported by GitHubMedium 5.3
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `HttpPostRequestDecoder` can be tricked to accumulate data. While the decoder can store items on the disk if configured so, there are no limits to the number of fields the form can have, an attacher can send a chunked post consisting of many small fields that will be accumulated in the `bodyListHttpData` list. The decoder cumulates bytes in the `undecodedChunk` buffer until it can decode a field, this field can cumulate data without limits. This vulnerability is fixed in 4.1.108.Final.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgithub.com
Sep 27, 2023xrdp is an open source remote desktop protocol server.CVE-2023-42822 · Other software · neutrinolabs · reported by GitHubMedium 4.6
xrdp is an open source remote desktop protocol server. Access to the font glyphs in xrdp_painter.c is not bounds-checked . Since some of this data is controllable by the user, this can result in an out-of-bounds read within the xrdp executable. The vulnerability allows an out-of-bounds read within a potentially privileged process. On non-Debian platforms, xrdp tends to run as root. Potentially an out-of-bounds write can follow the out-of-bounds read. There is no denial-of-service impact, providing xrdp is running in forking mode. This issue has been addressed in release 0.9.23.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Product
- xrdp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 22, 2023Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.CVE-2023-34462 · Other software · netty · reported by GitHubMedium 6.5
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `SniHandler` can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the `SniHandler` to allocate 16MB of heap. The `SniHandler` class is a handler that waits for the TLS handshake to configure a `SslHandler` according to the indicated server name by the `ClientHello` record. For this matter it allocates a `ByteBuf` using the value defined in the `ClientHello` record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the `SslClientHelloHandler`. This vulnerability has been fixed in version 4.1.94.Final.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 9, 2021Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.CVE-2021-43797 · Other software · netty · reported by GitHubMedium 6.5
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 30, 2021Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clienCVE-2021-21409 · Other software · netty · reported by GitHubMedium 5.9
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.
- Product
- netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcve.mitre.orggithub.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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