Important: nodejs22

Issue Overview: undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protoc...

PT-2026-102755

Name of the Vulnerable Software and Affected Versions libsoup affected versions not specified Description A flaw exists in the permessage-deflate WebSocket extension. When compressing a very large outgoing message, truncated size calculations used for GByteArray growth can wrap, leading zlib to...

PT-2026-102680

Name of the Vulnerable Software and Affected Versions libsoup affected versions not specified Description A flaw exists when reassembling fragmented WebSocket messages into a GByteArray. The software fails to adequately cap the total message size against the limits of the underlying buffer type. ...

CVE-2026-102560: Out-of-bounds Read

A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow...

PT-2026-102679

Name of the Vulnerable Software and Affected Versions libsoup affected versions not specified Description A flaw exists in libsoup where SoupWebsocketConnection emits the ::pong signal using a GByteArray pointer instead of the documented GBytes. Applications that implement a handler following the...

PT-2026-102754

Name of the Vulnerable Software and Affected Versions libsoup affected versions not specified Description A flaw exists when constructing a masked WebSocket client frame for very large outgoing payloads. Size values passed to GByteArray allocation APIs may be truncated, while the masking routine...

Linux Distros Unpatched Vulnerability : CVE-2026-102560

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for...

SUSE CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

ANT-2026-Y9CTVKPP · jetty/jetty.project · Denial of Service / Resource Exhaustion

denial-of-service high GHSA-85fq-fc5f-7j7g Severity Claude high · Security research firm high · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Ada Logics. ANT-2026-Y9CTVKPP: WebSocket reserved opcode...

NPM: undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression

NPM: undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression vulnerability discovered by ? in WordPress Npm undici versions = 6.25.0, 6.28.1...

undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression

Impact undici's WebSocket client including Node.js's bundled globalThis.WebSocket crashes the entire Node.js process when a remote WebSocket peer sends a permessage-deflate compressed message that crosses the decompressed-payload size limit and then contains a malformed DEFLATE block. In...

EUVD-2026-71603

undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression...

GHSA-3WWX-PV8P-Q78V undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression

Impact undici's WebSocket client including Node.js's bundled globalThis.WebSocket crashes the entire Node.js process when a remote WebSocket peer sends a permessage-deflate compressed message that crosses the decompressed-payload size limit and then contains a malformed DEFLATE block. In...

GO-2026-6482 Mattermost doesn't invalidate cached authentication state for active WebSocket connections during global session revocation in github.com/mattermost/mattermost-server

Mattermost doesn't invalidate cached authentication state for active WebSocket connections during global session revocation in github.com/mattermost/mattermost-server...

K000163436: Apache Tomcat vulnerabilities CVE-2026-73581, CVE-2026-76183, CVE-2026-77762, and CVE-2026-79677

Security Advisory Description CVE-2026-73581 Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M...

CVE-2026-87022

A flaw was found in Apache Tomcat. This vulnerability, related to improper handling of length parameters, allows for WebSocket message smuggling when the 'per-message-deflate' extension is in use. A remote attacker could exploit this to bypass security controls or inject malicious data into...

CVE-2026-79677

A flaw was found in Apache Tomcat. This vulnerability allows a remote attacker to cause a Denial of Service DoS by exploiting lost timeouts for asynchronous WebSocket writes. This can lead to the affected system becoming unresponsive or unavailable...

CVE-2026-77791

A flaw was found in Apache Tomcat. An uncontrolled resource consumption vulnerability occurs when sending a WebSocket close message, which can lead to a busy wait condition. A remote attacker could exploit this to cause a Denial of Service DoS by making the server unresponsive. Mitigation Red Hat...

CVE-2026-76183

A flaw was found in Apache Tomcat. This vulnerability, known as an 'Authentication Bypass by Alternate Name', allows an attacker to bypass the security restrictions set for WebSocket endpoints. This means that unauthorized users could gain access to protected resources or functionality, potential...

Uncontrolled Resource Consumption

Apache Tomcat is vulnerable to Uncontrolled Resource Consumption. The vulnerability is due to improper resource management in the WebSocket chat example application, which allows an attacker to consume excessive server resources and potentially cause a denial-of-service condition...