Bug 2508085 (CVE-2026-66299) - CVE-2026-66299 tomcat: Apache Tomcat: Denial of Service via WebSocket chat example
Summary: CVE-2026-66299 tomcat: Apache Tomcat: Denial of Service via WebSocket chat ex...
Keywords:
Status: NEW
Alias: CVE-2026-66299
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2510276
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-28 17:44 UTC by OSIDB Bzimport
Modified: 2026-08-03 04:48 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-28 17:44:58 UTC 
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.
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