CVE-2026-53404: Always-Incorrect Control Flow Implementation

June 29, 2026 (updated July 2, 2026)

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat’s rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

References

lists.apache.org/thread/rdhpghgfskrdmw9hqzjgjrtw538smpmz
nvd.nist.gov/vuln/detail/CVE-2026-53404

Code Behaviors & Features

Detect and mitigate CVE-2026-53404 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →