Astra Linux – Vulnerability in libsoup2.4

GNOME libsoup before version 3.6.1 has an infinite loop and consumes a large amount of memory during the reading of certain patterns of WebSocket data from clients...

Astra Linux – Vulnerability in Tomcat9

DoS attack due to a vulnerability related to incomplete cleanup in Apache Tomcat. WebSocket clients were able to keep WebSocket connections open, leading to increased resource consumption. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18,...

Astra Linux – Vulnerability in Thunderbird, Firefox

A poorly handled security check during the creation of a WebSocket in a WebWorker caused the Content Security Policy’s connect-src header to be ignored. This could lead to connections being made to restricted origins from within WebWorkers. This vulnerability affects Firefox 109, Firefox ESR 102....

Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)

SummaryThe Headroom WebSocket server does not validate the Origin header of incoming client WebSocket requests before forwarding the request to the upstream server, allowing malicious WebSocket clients to perform arbitrary LLM requests without authentication. This can be exploited by a malicious...

PYSEC-2026-4220 Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)

Summary The Headroom WebSocket server does not validate the Origin header of incoming client WebSocket requests before forwarding the request to the upstream server, allowing malicious WebSocket clients to perform arbitrary LLM requests without authentication. This can be exploited by a malicious...

CVE-2026-109855

A flaw was found in undici. A malicious remote server can cause a Denial of Service DoS by returning an invalid handshake response when a client attempts to establish a WebSocket connection over HTTP/2. The client mishandles the failed connection setup and leaves the underlying network stream ope...

Allocation of Resources Without Limits or Throttling

Overview io.vertx:vertx-core is a tool-kit for building reactive applications on the JVM. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WebSocket extension setup of HttpServerConnectionHandler and Http1ClientConnection, which...

Uncaught Exception

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Uncaught Exception in the experimental WebSocket client, where a response failing handshake validation triggers an abort that is a no-op because the request is already...

Security Bulletin: Multiple Vulnerabilities in IBM watsonx Code Assistant On Prem

Summary Multiple vulnerabilities were addressed in IBM watsonx Code Assistant On Prem V5.3.1 Patch 15 Vulnerability Details CVEID:CVE-2026-64847 DESCRIPTION: AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO...

DEBIAN-CVE-2026-109855

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

CVE-2026-109855

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

Security Bulletin: Multiple vulnerabilties in DevOps Test Hub

Summary Multiple vulnerabilities addressed in DevOps Test Hub in version 11.0.8 Vulnerability Details CVEID:CVE-2026-5680 DESCRIPTION: A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiate...

CVE-2026-102467

In Eclipse Vert.x versions 4.0.0, 4.5.34 or 5.0.0,5.0.12 or 5.1.0,5.1.9 or 5.2.0, 5.2.0, the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb. The impacted component is...

CVE-2026-109855

The undici HTTP client library for Node.js (versions 8.11.0 and 8.11.1 ) contains a vulnerability in its experimental WebSocket client . When HTTP/2 is enabled, a failed WebSocket handshake causes the request to be marked as completed prematurely, making the abort a no-op and leaving the underlyi...

CVE-2026-109855 undici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshake

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

EUVD-2026-101959

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

CVE-2026-109855 undici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshake

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

CVE-2026-102467

In Eclipse Vert.x versions 4.0.0, 4.5.34 or 5.0.0,5.0.12 or 5.1.0,5.1.9 or 5.2.0, 5.2.0, the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb. The impacted component is...

EUVD-2026-101929

In Eclipse Vert.x versions 4.0.0, 4.5.34 or 5.0.0,5.0.12 or 5.1.0,5.1.9 or 5.2.0, 5.2.0, the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb. The impacted component is...

CVE-2026-102467

In Eclipse Vert.x versions 4.0.0, 4.5.34 or 5.0.0,5.0.12 or 5.1.0,5.1.9 or 5.2.0, 5.2.0, the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb. The impacted component is...