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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-76183

Apache Tomcat: Bypass of security constraints for WebSocket endpoints

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Status
Published
Published
Updated
Assigning organization
apache

Description

Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121. The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache Tomcat

Default version status: unaffected

  • 11.0.0-M1 to ≤ 11.0.25affected
  • 10.1.0-M1 to ≤ 10.1.59affected
  • 9.0.0.M1 to ≤ 9.0.121affected
  • 8.5.0 to ≤ 8.5.100affected
  • 7.0.43 to ≤ 7.0.109affected
  • 0 to < 7.0.43unaffected

References