Updated 11 h 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.

1,764exploited flaws on CISA’s list

35added in the last 30 days

457new WordPress flaws this week

390,525entries in the database

377 results · page 3 of 8

Aug 10, 2026DEEBOT PRO M1 and DEEBOT PRO K1VAC improperly implement authentication in WebSocket communication.CVE-2026-66407 · Other software · ECOVACS ROBOTICS · reported by vultures@jpcert.or.jpHigh 7.7
DEEBOT PRO M1 and DEEBOT PRO K1VAC improperly implement authentication in WebSocket communication. The WebSocket private key may be retrieved through analyzing the traffic data via a man-in-the-middle attack, and communication contents may be altered.
Product
DEEBOT PRO M1
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record jvn.jp robot.hellohas.co.jp
Aug 6, 2026Missing authorization in the websocket consumer in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to subscribe to any document's event CVE-2026-18276 · Other software · Scripta · reported by cve@gitlab.comMedium 4.3
Missing authorization in the websocket consumer in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to subscribe to any document's event stream and observe another user's segmentation, transcription, import, export and training activity via the object_cls and object_pk values of a join-room message, which are passed to group_add without an access check
Product
eScriptorium
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record gitlab.com
Aug 1, 2026FreeRDP before 3.29.0 contains a buffer over-disclosure vulnerability in the gateway WebSocket transport (libfreerdp/core/gateway/websocket.c).CVE-2026-67292 · Other software · FreeRDP · reported by VulnCheckCritical 9.3
FreeRDP before 3.29.0 contains a buffer over-disclosure vulnerability in the gateway WebSocket transport (libfreerdp/core/gateway/websocket.c). The client's Pong reply reuses a fixed 1024-byte response stream whose length is not sealed to the actual received Ping payload, so a malicious gateway/WebSocket peer sending a non-empty Ping control frame causes the client to reply with an overlong Pong that discloses bytes beyond the received payload (the peer receives the masking key and can unmask the reply). A zero-length Ping reaches an assertion and terminates the client (denial of service).
Product
FreeRDP
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 30, 2026MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticateCVE-2026-66420 · Other software · Ylianst · reported by VulnCheckHigh 8.6
MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticated administrator sessions by exploiting an unconditional early return in the CheckWebServerOriginName() function within webserver.js when self-signed certificates are in use. Attackers can open cross-origin WebSocket connections to any of the twelve WebSocket endpoints, send crafted action commands to exfiltrate the server sessionKey used to sign session cookies, forge session tokens as arbitrary users, and gain full remote control of all managed devices governed by the MeshCentral instance.
Product
MeshCentral
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 29, 2026Use after free in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.CVE-2026-17947 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comCritical 9.6
Use after free in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)
Product
Chrome
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record chromereleases.googleblog.com issues.chromium.org
Jul 29, 2026Insufficient validation of untrusted input in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer procCVE-2026-17768 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comCritical 9.6
Insufficient validation of untrusted input in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
Product
Chrome
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record chromereleases.googleblog.com issues.chromium.org
Jul 29, 2026Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability.CVE-2026-13308 · Other software · Autel · reported by zdi-disclosures@trendmicro.comHigh 8.1
Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Elite Home EV chargers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of WebSocket messages related to the OCPP service. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29113.
Product
MaxiCharger AC Elite Home
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record zerodayinitiative.com
Jul 28, 2026Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example.CVE-2026-66299 · Websites & servers · Apache Software Foundation · reported by security@apache.orgMedium 5.3
Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue. Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.
Product
Apache Tomcat
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.apache.org openwall.com
Jul 24, 2026Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment CVE-2026-65623 · Other software · mtrudel · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbHigh 8.7
Inefficient Algorithmic Complexity vulnerability in mtrudel bandit allows unauthenticated remote denial of service via CPU exhaustion during WebSocket fragment reassembly. The size guard 'Elixir.Bandit.WebSocket.Connection':oversize_message?/2 called from handle_frame/3 in lib/bandit/websocket/connection.ex appends each non-final continuation frame to a left-nested iolist and then re-measures the entire accumulated buffer with IO.iodata_length/1 on every frame. Because the buffer grows by one element per frame and is fully re-traversed each time, reassembly work is quadratic (O(n^2)) in the number of continuation frames. The max_fragmented_message_size limit (default 8 MB) bounds total bytes but not frame count, and each frame can carry as little as one payload byte, so an attacker can send millions of tiny continuation frames using modest bandwidth to pin a CPU core for minutes to hours. Many concurrent connections can starve the whole server of CPU, denying service to legitimate users. The WebSocket read timeout does not help, because it is an idle timeout evaluated between reads and cannot preempt the synchronous reassembly work spent inside a single callback. This issue affe
Product
bandit
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org github.com
Jul 21, 2026Information disclosure in the Networking: WebSockets component.CVE-2026-16405 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgHigh 7.5
Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Product
Firefox
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugzilla.mozilla.org mozilla.org
Jul 20, 2026SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to bufferCVE-2026-63750 · Other software · surrealdb · reported by VulnCheckMedium 6.9
SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple concurrent connections to consume excessive memory and degrade /sql availability.
Product
surrealdb
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com vulncheck.com
Jul 18, 2026Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewriCVE-2026-15631 · Other software · @fastify/http-proxy · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 8.7
Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which collapses dot segments, so a crafted upgrade request with path traversal sequences can escape the rewrite prefix and reach upstream endpoints that were not meant to be exposed by the proxy. This is a variant of CVE-2021-21322 in a code path that never went through the HTTP fix in fastify/reply-from. Exploitation requires a non-normalizing WebSocket client, since browsers and the ws package normalize the request path before sending, but raw HTTP clients or downstream proxies that forward the request target unchanged make the attack reachable in production topologies. Patches: upgrade to @fastify/http-proxy 11.6.0. Workarounds: none.
Product
@fastify/http-proxy
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jul 17, 2026websocket-driver is a WebSocket protocol handler with pluggable I/O.CVE-2026-54490 · Other software · faye · reported by GitHubMedium 6.3
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, if this library is used with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size because the limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression in lib/websocket/driver/hybi.js. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. This issue is fixed in version 0.7.5.
Product
websocket-driver-node
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2026websocket-driver is a WebSocket protocol handler with pluggable I/O.CVE-2026-54466 · Other software · faye · reported by GitHubCritical 9.2
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.
Product
websocket-driver-node
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2026websocket-driver is a WebSocket protocol handler with pluggable I/O.CVE-2026-54465 · Other software · faye · reported by GitHubMedium 6.3
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, when websocket-driver is used to implement a WebSocket server on top of a TCP server using WebSocket::Driver.server() or to complement a WebSocket client, a peer can make a single connection consume an unbounded amount of memory by sending an HTTP request or response with a never-ending list of headers. This can lead to the receiving process running out of memory. This issue is fixed in version 0.8.1.
Product
websocket-driver-ruby
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2026### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are largCVE-2026-54464 · Other software · faye · reported by GitHubMedium 6.3
### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. ### Patches The issue has been patched in version 0.8.1, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.
Product
websocket-driver-ruby
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2026websocket-driver is a WebSocket protocol handler with pluggable I/O.CVE-2026-54463 · Other software · faye · reported by GitHubMedium 6.9
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.
Product
websocket-driver-ruby
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2026A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-sCVE-2026-51082 · Other software · reported by MITREHigh 7.2
A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 (PVE 9.x) and before 5.3.4 (PVE 8.x) allows an attacker with privileges to call "vncproxy" to hijack a VNC session that is established in parallel by a different user for a different VM.
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record forum.proxmox.com
Jul 16, 2026OpenClaw 2026.2.25 before 2026.5.26 allow a lower-trust caller or configured input path to bypass non-browser rate limits on WebSocket authentication attempts.CVE-2026-62220 · Other software · OpenClaw · reported by VulnCheckMedium 6.3
OpenClaw 2026.2.25 before 2026.5.26 allow a lower-trust caller or configured input path to bypass non-browser rate limits on WebSocket authentication attempts. When the affected feature is enabled and reachable by lower-trust input, this can consume gateway resources and reduce service availability.
Product
OpenClaw
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com vulncheck.com
Jul 16, 2026Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy.CVE-2026-55629 · Other software · avwo · reported by GitHubHigh 8.7
Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy. Prior to 2.10.3, lib/service/service.js handles GET /cgi-bin/temp/get by reading req.query.filename, joining it to TEMP_FILES_PATH only when it matches the temporary file pattern, and otherwise passing the user-supplied filename directly to getFile, allowing a remote attacker to read arbitrary files such as /etc/passwd. This issue is reported as fixed in version 2.10.3.
Product
whistle
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 15, 2026A vulnerability was identified in the Feast Feature Server's `/ws/chat` endpoint that allows remote attackers to establish persistent WebSocket connections withCVE-2026-23538 · Other software · Feast · reported by Red HatHigh 7.5
A vulnerability was identified in the Feast Feature Server's `/ws/chat` endpoint that allows remote attackers to establish persistent WebSocket connections without any authentication. By opening a large number of simultaneous connections, an attacker can exhaust server resources—such as memory, CPU, and file descriptors—leading to a complete denial of service for legitimate users.
Product
Feast Feature Server
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com bugzilla.redhat.com
Jul 14, 2026A vulnerability was found in libsoup's WebSocket frame parsing implementation.CVE-2026-15711 · Other software · Red Hat · reported by Red HatHigh 7.5
A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com access.redhat.com
Jul 14, 2026A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension.CVE-2026-15709 · Other software · Red Hat · reported by Red HatHigh 7.5
A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop (inflate()) processes data in chunks without enforcing an upper boundary limit on the output buffer size. While libsoup limits the incoming compressed frame size via max_incoming_payload_size, it fails to track or limit memory allocation during decompression. A separate check for decompressed size (max_total_message_size) exists but executes only after inflation is complete, and it is entirely disabled by default for client connections. A remote, unauthenticated attacker can exploit this by sending a small, highly compressed payload (a decompression bomb), causing unbounded memory allocation that triggers an Out-of-Memory (OOM) crash and a Denial of Service (DoS).
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com access.redhat.com
Jul 13, 2026OpenClaw before 2026.6.6 contains a policy bypass vulnerability in browser CDP discovery that accepts blocked WebSocket URLs.CVE-2026-62197 · Other software · OpenClaw · reported by VulnCheckMedium 6.3
OpenClaw before 2026.6.6 contains a policy bypass vulnerability in browser CDP discovery that accepts blocked WebSocket URLs. Attackers with lower-trust access can reach network destinations that should have been blocked by OpenClaw policy when the affected feature is enabled.
Product
OpenClaw
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com vulncheck.com
Jul 10, 2026The charging station websocket endpoint accepts connections without proper authentication, which could lead to privilege escalation.CVE-2026-20744 · Other software · Hydro-Québec · reported by ics-cert@hq.dhs.govCritical 9.3
The charging station websocket endpoint accepts connections without proper authentication, which could lead to privilege escalation.
Product
Le Circuit Electrique charging station backend
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com cisa.gov
Jul 6, 2026Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel in AtmosCVE-2026-55993 · Email & office · Apache Software Foundation · reported by security@apache.orgHigh 7.5
Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel in Atmosphere Websocket Component. The camel-atmosphere-websocket consumer mapped inbound WebSocket query parameters into the Camel Exchange header map without applying any HeaderFilterStrategy (WebsocketConsumer.sendEventNotification() iterates the query-string map collected in WebsocketConsumer.service() and copies each entry into the Exchange). Because nothing blocked the Camel header namespace, a client connecting to the WebSocket endpoint could set Camel-internal control headers - including CamelHttpUri (Exchange.HTTP_URI) - simply by supplying them as query parameters. In a route where the WebSocket consumer feeds a downstream HTTP producer, the injected CamelHttpUri redirects the server-side HTTP request to an attacker-chosen destination (server-side request forgery - for example to an internal service or a cloud metadata endpoint). In addition, the HTTP producer resolves Camel property placeholders on the resulting (attacker-controlled) URI, so placeholders embedded in the injected value - such as an environment-variable re
Product
Apache Camel Atmosphere Websocket
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record camel.apache.org openwall.com
Jul 6, 2026Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel in VertxCVE-2026-46726 · Email & office · Apache Software Foundation · reported by security@apache.orgHigh 7.5
Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Server-Side Request Forgery (SSRF) vulnerability in Apache Camel in Vertx Websocket component. The camel-vertx-websocket consumer mapped inbound WebSocket query and path parameters into the Camel Exchange header map without applying any HeaderFilterStrategy (VertxWebsocketConsumer.populateExchangeHeaders()). Because nothing blocked the Camel header namespace, a client connecting to the WebSocket endpoint could set Camel-internal control headers - including CamelHttpUri (Exchange.HTTP_URI) - simply by supplying them as query parameters. In a route where the WebSocket consumer feeds a downstream HTTP producer, the injected CamelHttpUri redirects the server-side HTTP request to an attacker-chosen destination (server-side request forgery - for example to an internal service or a cloud metadata endpoint). In addition, the HTTP producer resolves Camel property placeholders on the resulting (attacker-controlled) URI, so placeholders embedded in the injected value - such as an environment-variable reference, an application property, or a vault reference - are resolved to their real values and sent to th
Product
Apache Camel Vertx Websocket
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record camel.apache.org openwall.com
Jul 3, 2026In affected versions of Eclipse Theia (1.8.1 and later), the browser backend exposes privileged terminal RPC over WebSocket (/services/shell-terminal, /servicesCVE-2026-10054 · Other software · Eclipse Foundation · reported by emo@eclipse.orgHigh 8.8
In affected versions of Eclipse Theia (1.8.1 and later), the browser backend exposes privileged terminal RPC over WebSocket (/services/shell-terminal, /services/terminals/:id) without service-level authentication. WebSocket origin validation in @theia/core is fail-open: connections are accepted when the Origin header is missing or when no THEIA_HOSTS allowlist is configured (the default). The Socket.IO integration additionally replaces the real Origin header with a client-supplied fix-origin header that an attacker can control or omit. As a result, a foreign-origin web page visited by a user with a running Theia instance can open the /services WebSocket namespace, invoke terminal creation, attach to the resulting terminal data channel, execute arbitrary OS commands, and read their output. This affects both local developer setups (drive-by attack) and hosted or tunneled deployments without strong external authentication. A fix is in development that enforces same-origin validation by default, removes trust in the fix-origin header, gates HTTP and WebSocket access on a SameSite=Strict; HttpOnly connection-token cookie, and sanitizes shell terminal creation options.
Product
Eclipse Theia
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com gitlab.eclipse.org
Jul 3, 2026By default, curl automatically responds to WebSocket PING frames.CVE-2026-11586 · Other software · curl · reported by 2499f714-1537-4658-8207-48ae4bb9eae9High 7.5
By default, curl automatically responds to WebSocket PING frames. Because curl lacks an upper bound on memory allocation for unacknowledged frames, a malicious server can exhaust all available memory by flooding curl with rapid, sequential PING messages.
Product
curl
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record curl.se curl.se
Jun 25, 2026The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifieCVE-2026-54479 · Other software · EVoke · reported by ics-cert@hq.dhs.govMedium 6.9
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
Product
EVoke CSMS
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record evokesystems.com github.com
Jun 25, 2026The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests.CVE-2026-50176 · Other software · EVoke · reported by ics-cert@hq.dhs.govHigh 8.7
The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks or brute-force attacks to gain unauthorized access.
Product
EVoke CSMS
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record evokesystems.com github.com
Jun 25, 2026WebSocket endpoints lack proper authentication mechanisms, enabling attackers to impersonate charging stations.CVE-2026-40702 · Other software · EVoke · reported by ics-cert@hq.dhs.govCritical 9.3
WebSocket endpoints lack proper authentication mechanisms, enabling attackers to impersonate charging stations. As a result, attackers can exploit this weakness to gain unauthorized access to sensitive data or perform unauthorized actions. Given that no authentication is required, this can lead to privilege escalation and potentially compromise the security of the entire system.
Product
EVoke CSMS
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record evokesystems.com github.com
Jun 23, 2026A missing authorization vulnerability was found in the Event-Driven Ansible (EDA) websocket API.CVE-2026-11807 · Other software · Red Hat · reported by Red HatCritical 9.6
A missing authorization vulnerability was found in the Event-Driven Ansible (EDA) websocket API. The /api/eda/ws/ansible-rulebook endpoint does not verify user permissions when processing Worker messages. Any authenticated user can send a forged message with an arbitrary activation_id to receive plaintext credentials associated with that activation, including OAuth tokens, vault passwords, and SSH keys.
Product
Red Hat Ansible Automation Platform 2.5 for RHEL 8
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com access.redhat.com
Jun 17, 2026Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation.CVE-2026-53869 · Other software · NousResearch · reported by VulnCheckHigh 8.7
Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers to exploit DNS rebinding and inject malicious commands or read terminal output.
Product
hermes-agent
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jun 17, 2026Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages.CVE-2026-9675 · Other software · undici · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each pass per-frame validation but collectively exceed the configured limit, causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. This is a regression specific to undici 8.1.0. The 6.25.0 line shipped the equivalent cumulative check from the start and is unaffected. The 7.x line never had the maxPayloadSize feature and is also unaffected. Patches: Upgrade to undici >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade.
Product
undici
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jun 17, 2026Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number ofCVE-2026-12151 · Other software · undici · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. All releases starting at undici 6.17.0 are affected. Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade.
Product
undici
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jun 17, 2026ws is an open source WebSocket client and server for Node.js.CVE-2026-48779 · Other software · websockets · reported by GitHubHigh 7.5
ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer can send a high volume of exceptionally small fragments and data chunks, with modest network traffic, to force the remote peer into allocating and holding structural wrappers that consume far more memory than the default documented message-size limit, leading to process termination due to OOM. This issue has been fixed in versions 5.2.5, 6.2.4, 7.5.11, and 8.21.0.
Product
ws
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jun 16, 2026A denial-of-service vulnerability exists in the WebSocket API due to insufficient validation and handling of JSON-based requests.CVE-2026-10825 · Other software · Moxa · reported by psirt@moxa.comHigh 7.1
A denial-of-service vulnerability exists in the WebSocket API due to insufficient validation and handling of JSON-based requests. A low-privileged authenticated attacker can send a specially crafted request that causes service disruption and may result in an unexpected device reboot.
Product
NPort 6000-G2 Series
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record moxa.com
Jun 15, 2026The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains an incorrect authorization vulnerability in the WebSocket communication used by CVE-2026-34023 · Other software · Wertheim GmbH · reported by 551230f0-3615-47bd-b7cc-93e92e730bbfHigh 7.1
The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains an incorrect authorization vulnerability in the WebSocket communication used by the SafeController WebMessageBroker. An authenticated attacker with valid low-privileged branch user credentials can manipulate WebSocket messages by specifying controller identifiers belonging to other branches. This allows the attacker to access restricted functions and resources in other branches, including activating boxes outside of the user's authorized branch.
Product
Wertheim SafeController Software for VAULT ROOMS (Safe Deposit Locker System)
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record r.sec-consult.com wertheim-safes.com
Jun 12, 2026OpenClaw before 2026.5.18 accepts WebSocket client-declared operator scopes before binding to server-approved pairing or trusted-proxy authorization baseline.CVE-2026-53821 · Other software · OpenClaw · reported by VulnCheckHigh 8.7
OpenClaw before 2026.5.18 accepts WebSocket client-declared operator scopes before binding to server-approved pairing or trusted-proxy authorization baseline. Unpaired or restricted trusted-proxy Control UI clients can obtain cached operator.admin authority on live WebSocket connections to execute admin-gated Gateway RPCs.
Product
OpenClaw
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com vulncheck.com
Jun 12, 2026Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to restrict role_updated websocket event broadcasts to memCVE-2026-3433 · Other software · Mattermost · reported by responsibledisclosure@mattermost.comMedium 4.3
Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to restrict role_updated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change notifications for private teams they are not a member of via the websocket connection.. Mattermost Advisory ID: MMSA-2026-00616
Product
Mattermost
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record mattermost.com
Jun 11, 2026Spring for GraphQL applications that have enabled the WebSocket transport are vulnerable to Cross-Site WebSocket Hijacking.CVE-2026-41700 · Other software · Spring · reported by security@vmware.comHigh 8.1
Spring for GraphQL applications that have enabled the WebSocket transport are vulnerable to Cross-Site WebSocket Hijacking. An attacker can trick an authenticated user into visiting a malicious page, allowing the attacker to execute arbitrary GraphQL operations with the victim's credentials. Affected versions: Spring for GraphQL 2.0.0 through 2.0.3; 1.4.0 through 1.4.5; 1.3.0 through 1.3.8; 1.0.0 through 1.0.6.
Product
Spring for GraphQL
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record spring.io
Jun 9, 2026A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header.CVE-2026-5067 · Other software · zephyrproject-rtos · reported by vulnerabilities@zephyrproject.orgCritical 9.8
A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and subsequent concatenation with the WebSocket magic string can write out of bounds. This leads to out-of-bounds read and write on stack memory, resulting in crash (denial of service) and potentially code execution. The path is reachable when CONFIG_HTTP_SERVER_WEBSOCKET is enabled.
Product
Zephyr
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jun 9, 2026IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequaCVE-2026-41838 · Other software · Spring · reported by security@vmware.comMedium 4.8
IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
Product
Spring Framework
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record spring.io
Jun 4, 2026Use after free in WebSockets in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML pagCVE-2026-11068 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comHigh 8.8
Use after free in WebSockets in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
Product
Chrome
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record chromereleases.googleblog.com issues.chromium.org
Jun 3, 2026daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing.CVE-2026-44546 · Other software · djangoproject · reported by 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92Low 3.7
daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.
Product
daphne
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com
Jun 3, 2026daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory.CVE-2026-44545 · Other software · djangoproject · reported by 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92Medium 5.3
daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.
Product
daphne
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com
Jun 2, 2026A flaw has been found in warmcat libwebsockets up to 4.5.8.CVE-2026-10650 · Other software · warmcat · reported by VulDBMedium 5.5
A flaw has been found in warmcat libwebsockets up to 4.5.8. This issue affects the function lws_ssh_parse_plaintext of the file plugins/protocol_lws_ssh_base/sshd.c of the component SSH Protocol Handler. Executing a manipulation of the argument msg_len can lead to resource consumption. The attack may be launched remotely. The exploit has been published and may be used. This patch is called 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498. A patch should be applied to remediate this issue.
Product
libwebsockets
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 29, 2026XX-Net V5.16.6 contains a WebSocket frame parsing vulnerability in the WebSocket_receive_worker routine of simple_http_server.py that allows attackers to cause CVE-2026-10099 · Other software · XX-net · reported by VulnCheckMedium 5.1
XX-Net V5.16.6 contains a WebSocket frame parsing vulnerability in the WebSocket_receive_worker routine of simple_http_server.py that allows attackers to cause corrupted application data by sending unmasked WebSocket frames. The server unconditionally reads 4 bytes as a masking key regardless of whether the MASK bit is set in the frame header, causing the first 4 bytes of payload to be consumed as a mask key and the remaining payload to be incorrectly XOR-decoded, resulting in data corruption alongside missing RSV bit, opcode, and FIN fragmentation validations.
Product
XX-Net
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 22, 2026Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before CVE-2026-5740 · Other software · Mattermost · reported by responsibledisclosure@mattermost.comHigh 7.5
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users via a crafted binary WebSocket message sent to the public WebSocket endpoint.. Mattermost Advisory ID: MMSA-2026-00647
Product
Mattermost
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record mattermost.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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