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CVE-2026-76183 Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any…

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 and versions

Product Affected versions Fixed in
Apache Tomcat 11.0 11.0.0-M1 → 11.0.25 No fix stated
Apache Tomcat 10.1 10.1.0-M1 → 10.1.59 No fix stated
Apache Tomcat 9.0 9.0.0.M1 → 9.0.121 No fix stated
Apache Tomcat 8.5 8.5.0 → 8.5.100 No fix stated
Apache Tomcat 7.0 7.0.43 → 7.0.109 No fix stated

References

Timeline

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