Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 46 min ago

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.

1,762exploited flaws on CISA’s list
34added in the last 30 days
353new WordPress flaws this week
390,080entries in the database

277 results · page 3 of 6

  • Jun 12, 2026Frappe is a full-stack web application framework.CVE-2026-47739 · Other software · frappe · reported by GitHubMedium 6.9

    Frappe is a full-stack web application framework. Prior to versions 15.106.0 and 16.16.0, stored XSS in Note was possible due to lack of sanitization. This issue has been patched in versions 15.106.0 and 16.16.0.

    Product
    frappe
    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, 2026Frappe is a full-stack web application framework.CVE-2026-44205 · Other software · frappe · reported by GitHubMedium 6.9

    Frappe is a full-stack web application framework. Prior to version 15.106.0, a stored XSS vulnerability in the user profile image section allows an attacker to execute malicious scripts in the browsers of other users. This issue has been patched in version 15.106.0.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 12, 2026Frappe is a full-stack web application framework.CVE-2026-41581 · Other software · frappe · reported by GitHubMedium 6.9

    Frappe is a full-stack web application framework. Prior to versions 15.106.0 and 16.16.0, there is a possible SQL Injection via get_blog_list. This issue has been patched in versions 15.106.0 and 16.16.0.

    Product
    frappe
    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 5, 2026An encrypted password command injection vulnerability exists in the Captive Portal application framework of Arista Edge Threat Management - Arista Next GeneratiCVE-2026-25620 · Other software · Arista Networks · reported by psirt@arista.comHigh 7

    An encrypted password command injection vulnerability exists in the Captive Portal application framework of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). This issue uniquely affects version 17.4.0; earlier software releases are not exposed.

    Product
    Arista Edge Threat Management - Arista Next Generation Firewall (NGFW)
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 28, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-47676 · Other software · honojs · reported by GitHubMedium 5.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, app.mount() strips the mount prefix from the incoming request path using the raw URL pathname, while route matching is performed against the percent-decoded path. This inconsistency causes the prefix to be stripped at the wrong position when the path contains percent-encoded multi-byte characters, resulting in the mounted sub-application receiving an incorrect path. This vulnerability is fixed in 4.12.21.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 28, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-47675 · Other software · honojs · reported by GitHubMedium 4.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \r, \n), but does not apply the same validation to sameSite and priority. An application that passes user-controlled input into either option may produce a Set-Cookie response header containing attacker-chosen additional attributes. This vulnerability is fixed in 4.12.21.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 28, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-47674 · Other software · honojs · reported by GitHubMedium 5.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 28, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-47673 · Other software · honojs · reported by GitHubMedium 4.8

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify that the Authorization header value uses theBearer scheme. Any two-part header value — regardless of the scheme name in the first position — proceeds to JWT verification. A request presenting a valid JWT under a non-Bearer scheme identifier (such as Basic or Token) is authenticated identically to a correctly formed Bearer request. This vulnerability is fixed in 4.12.21.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 20, 2026Yii 2 is a PHP application framework.CVE-2026-39850 · Other software · yiisoft · reported by GitHubHigh 7.4

    Yii 2 is a PHP application framework. Versions 2.0.54 and prior contain flawed logic in the core view rendering method View::renderPhpFile() that leads to Local File Inclusion. The function calls extract($_params_, EXTR_OVERWRITE) before the require statement that loads the view file. As a result, a caller-controlled _file_ key in the $params array overwrites the internal local variable specifying which file to include, potentially enabling RCE if an attacker can write PHP files through a separate primitive, as well as information disclosure. This issue has been fixed in version 2.0.55.

    Product
    yii2
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 20, 2026Frappe is a full-stack web application framework.CVE-2026-39352 · Other software · frappe · reported by GitHubHigh 8.7

    Frappe is a full-stack web application framework. Versions prior to 15.105.0 and 16.15.0 contain a possible Arbitrary File Read vulnerability via Path Traversal. The issue is resolved in versions 16.15.0, 15.105.0 and above.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-44248 · Other software · netty · reported by GitHubMedium 5.3

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the MQTT 5 header Properties section is parsed and buffered before any message size limit is applied. Specifically, in MqttDecoder, the decodeVariableHeader() method is called before the bytesRemainingBeforeVariableHeader > maxBytesInMessage check. The decodeVariableHeader() can call other methods which will call decodeProperties(). Effectively, Netty does not apply any limits to the size of the properties being decoded. Additionally, because MqttDecoder extends ReplayingDecoder, Netty will repeatedly re-parse the enormous Properties sections and buffer the bytes in memory, until the entire thing parses to completion. This can cause high resource usage in both CPU and memory. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42587 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpContentDecompressor accepts a maxAllocation parameter to limit decompression buffer size and prevent decompression bomb attacks. This limit is correctly enforced for gzip and deflate encodings via ZlibDecoder, but is silently ignored when the content encoding is br (Brotli), zstd, or snappy. An attacker can bypass the configured decompression limit by sending a compressed payload with Content-Encoding: br instead of Content-Encoding: gzip, causing unbounded memory allocation and out-of-memory denial of service. The same vulnerability exists in DelegatingDecompressorFrameListener for HTTP/2 connections. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42586 · Other software · netty · reported by GitHubMedium 6.8

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or sanitizing CRLF (\r\n) characters. Since the Redis Serialization Protocol (RESP) uses CRLF as the command/response delimiter, an attacker who can control the content of a Redis message can inject arbitrary Redis commands or forge fake responses. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42585 · Other software · netty · reported by GitHubMedium 6.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42584 · Other software · netty · reported by GitHubHigh 7.3

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpClientCodec pairs each inbound response with an outbound request by queue.poll() once per response, including for 1xx. If the client pipelines GET then HEAD and the server sends 103, then 200 with GET body, then 200 for HEAD, the queue pairs HEAD with the first 200. The HEAD rule then skips reading that message’s body, so the GET entity bytes stay on the stream and the following 200 is parsed from the wrong offset. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42583 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block) before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42582 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final, when decoding header blocks, the non-Huffman branch of io.netty.handler.codec.http3.QpackDecoder#decodeHuffmanEncodedLiteral may execute new byte[length] for a string literal before verifying that length bytes are actually present in the compressed field section. The wire encoding allows a very large length to be expressed in few bytes. There is no check that length <= in.readableBytes() before new byte[length]. This vulnerability is fixed in 4.2.13.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42581 · Other software · netty · reported by GitHubMedium 5.8

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absent for HTTP/1.0. An attacker that sends an HTTP/1.0 request with both headers causes Netty to decode the body as chunked while leaving Content-Length intact in the forwarded HttpMessage. Any downstream proxy or handler that trusts Content-Length over Transfer-Encoding will disagree on message boundaries, enabling request smuggling. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42580 · Other software · netty · reported by GitHubMedium 6.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42579 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42578 · Other software · netty · reported by GitHubLow 2.9

    Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly disabled. The newInitialMessage() method creates headers using DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders without any CRLF validation. This allows an attacker who can influence the outbound headers to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-42577 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100% CPU busy-loop in the event loop thread. This vulnerability is fixed in 4.2.13.Final.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-44459 · Other software · honojs · reported by GitHubLow 3.8

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, improper validation of the JWT NumericDate claims exp, nbf, and iat in hono/utils/jwt allows tokens with non-spec-compliant claim values to silently bypass time-based checks. This issue is not exploitable by an anonymous attacker; it only manifests when a malformed claim value reaches verify() — typically when the application itself issues such tokens, or when the signing key is otherwise under attacker control. This vulnerability is fixed in 4.12.18.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-44458 · Other software · honojs · reported by GitHubMedium 4.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, the JSX renderer escapes style attribute object values for HTML but not for CSS. Untrusted input in a style object value or property name can therefore inject additional CSS declarations into the rendered style attribute. The impact is limited to CSS and does not allow JavaScript execution or HTML attribute breakout. This vulnerability is fixed in 4.12.18.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-44457 · Other software · honojs · reported by GitHubMedium 5.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, Cache Middleware does not skip caching for responses that declare per-user variance via Vary: Authorization or Vary: Cookie. As a result, a response cached for one authenticated user may be served to subsequent requests from different users. This vulnerability is fixed in 4.12.18.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-44456 · Other software · honojs · reported by GitHubMedium 6.5

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, bodyLimit() does not reliably enforce maxSize for requests without a usable Content-Length (e.g. Transfer-Encoding: chunked). Oversized requests can reach handlers and return 200 instead of 413. This vulnerability is fixed in 4.12.16.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 13, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-44455 · Other software · honojs · reported by GitHubMedium 4.7

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output. When untrusted input is used as a tag name via the programmatic jsx() or createElement() APIs during server-side rendering, specially crafted values may break out of the intended element context and inject unintended HTML. This vulnerability is fixed in 4.12.16.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 8, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-39410 · Other software · honojs · reported by GitHubMedium 4.8

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinct by the browser may be normalized to the same key by parse(), allowing attacker-controlled cookies to override legitimate ones. This vulnerability is fixed in 4.12.12.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 8, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-39409 · Other software · honojs · reported by GitHubMedium 6.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction() does not canonicalize IPv4-mapped IPv6 client addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause IPv4 rules to fail to match, leading to unintended authorization behavior. This vulnerability is fixed in 4.12.12.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 8, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-39408 · Other software · honojs · reported by GitHubMedium 5.9

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic route parameters via ssgParams, specially crafted values can cause generated file paths to escape the intended output directory. This vulnerability is fixed in 4.12.12.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 8, 2026Hono is a Web application framework that provides support for any JavaScript runtime.CVE-2026-39407 · Other software · honojs · reported by GitHubMedium 5.3

    Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path handling inconsistency in serveStatic allows protected static files to be accessed by using repeated slashes (//) in the request path. When route-based middleware (e.g., /admin/*) is used for authorization, the router may not match paths containing repeated slashes, while serveStatic resolves them as normalized paths. This can lead to a middleware bypass. This vulnerability is fixed in 4.12.12.

    Product
    hono
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 7, 2026Frappe is a full-stack web application framework.CVE-2026-39351 · Other software · frappe · reported by GitHubMedium 6.9

    Frappe is a full-stack web application framework. Prior to 16.14.0 and 15.104.0, Frappe allows unrestricted Doctype access via API exploit.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Apr 7, 2026Frappe is a full-stack web application framework.CVE-2026-35614 · Other software · frappe · reported by GitHubCritical 9.3

    Frappe is a full-stack web application framework. Prior to 16.14.0 and 15.104.0, Frappe has a SQL injection in bulk_update. This vulnerability is fixed in 16.14.0 and 15.104.0.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 27, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-33871 · Other software · netty · reported by GitHubHigh 8.7

    Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 27, 2026Netty is an asynchronous, event-driven network application framework.CVE-2026-33870 · Other software · netty · reported by GitHubHigh 7.5

    Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

    Product
    netty
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 11, 2026Frappe is a full-stack web application framework.CVE-2026-31879 · Other software · frappe · reported by GitHubMedium 5.1

    Frappe is a full-stack web application framework. Prior to 14.100.2, 15.101.0, and 16.10.0, due to a lack of validation and improper permission checks, users could modify other user's private workspaces. Specially crafted requests could lead to stored XSS here. This vulnerability is fixed in 14.100.2, 15.101.0, and 16.10.0.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 11, 2026Frappe is a full-stack web application framework.CVE-2026-31878 · Other software · frappe · reported by GitHubMedium 5

    Frappe is a full-stack web application framework. Prior to 14.100.1, 15.100.0, and 16.6.0, a malicious user could send a crafted request to an endpoint which would lead to the server making an HTTP call to a service of the user's choice. This vulnerability is fixed in 14.100.1, 15.100.0, and 16.6.0.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 11, 2026Frappe is a full-stack web application framework.CVE-2026-31877 · Other software · frappe · reported by GitHubCritical 9.3

    Frappe is a full-stack web application framework. Prior to 15.84.0 and 14.99.0, a specially crafted request made to a certain endpoint could result in SQL injection, allowing an attacker to extract information they wouldn't otherwise be able to. This vulnerability is fixed in 15.84.0 and 14.99.0.

    Product
    frappe
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

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.

Weekly security brief

The flaws that hit local websites, every Friday.

One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.

Get in touch

Tell us what you're building.

A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.

01The person who'll do the work writes back
02A short call, then a written plan with the price
03Nothing starts until you say yes
04Hacked or down right now? Call, and we pick up the same day
843-331-6339

Not ready to talk yet? Run the free website check and see what Google sees.

What do you need?
Build
Grow
Protect
Urgent

No newsletter, no sales sequence. Just a reply.