# CVE-2026-53404

## Summary

- **CVE ID:** CVE-2026-53404
- **Severity:** HIGH
- **CVSS Score:** 7.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
- **CWE:** CWE-670
- **Published:** Jun 29, 2026
- **Last Modified:** Jun 30, 2026

## Description

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.

## Affected Products

- Apache Software Foundation — Apache Tomcat (11.0.0-M1)
- Apache Software Foundation — Apache Tomcat (10.1.0-M1)
- Apache Software Foundation — Apache Tomcat (9.0.0.M1)
- Apache Software Foundation — Apache Tomcat (8.5.0)
- Apache Software Foundation — Apache Tomcat (0)

## References

- [CNA](https://lists.apache.org/thread/rdhpghgfskrdmw9hqzjgjrtw538smpmz)
- [CVE](http://www.openwall.com/lists/oss-security/2026/06/29/21)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.62%
- **EPSS Percentile:** 47.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._