SUSE CVE-2026-66299

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...

DEBIAN-CVE-2026-66299

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...

CVE-2026-66299

Summary: CVE-2026-66299 describes an Uncontrolled Resource Consumption (DoS) in Apache Tomcat’s WebSocket chat example. The vulnerability affects Tomcat versions 11.0.0-M20 through 11.0.24, 10.1.24 through 10.1.57, and 9.0.89 through 9.0.120. The root cause is an unbounded buffer for undelivered ...

Fixed in Apache Tomcat 9.0.121

Low: DoS in WebSocket chat example CVE-2026-66299 The WebSocket chat example provided an unbounded buffer for undelivered messages. A maliciously slow client could cause the buffer to grow continuously, eventually leading to an memory exhaustion and failure of the Tomcat process. This was fixed...

CVE-2026-66299 Apache Tomcat: DoS via WebSocket chat example

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...

PT-2026-65495

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M20 through 11.0.24 Apache Tomcat versions 10.1.24 through 10.1.57 Apache Tomcat versions 9.0.89 through 9.0.120 Description An uncontrolled resource consumption issue exists in the WebSocket chat example. The...