apache/tomcat · Security
Apache Tomcat Rewrite rule bypass
- GHSA ID
- GHSA-ff77-26x5-69cr
- CVE ID
- CVE-2025-31651
- Severity
- low
- Published
- Updated
- CVSS v4
- 2.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Description
Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. For a subset of unlikely rewrite rule configurations, it was possible for a specially crafted request to bypass some rewrite rules. If those rewrite rules effectively enforced security constraints, those constraints could be bypassed.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.5, from 10.1.0-M1 through 10.1.39, from 9.0.0.M1 through 9.0.102. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected.
Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6, which fix the issue.
CWEs
- CWE-116 · Improper Encoding or Escaping of Output
- CWE-150 · Improper Neutralization of Escape, Meta, or Control Sequences
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-31651 ↗
- https://lists.apache.org/[email protected] ↗
- http://www.openwall.com/lists/oss-security/2025/04/28/3 ↗
- https://github.com/apache/tomcat/commit/066bf6b6a15a4e7e0941d4acf096841165b97098 ↗
- https://github.com/apache/tomcat/commit/175dc75fc428930034a6c93fb52f830d955d8e64 ↗
- https://github.com/apache/tomcat/commit/ee3ab548e92345eca0cbd1f01649eb36c6f29454 ↗
- https://github.com/apache/tomcat/commit/fbecc915a10c5a3d634c5e2c6ced4ff479ce9953 ↗
- https://tomcat.apache.org/security-10.html ↗
- https://tomcat.apache.org/security-11.html ↗
- https://tomcat.apache.org/security-9.html ↗
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html ↗
- https://github.com/advisories/GHSA-ff77-26x5-69cr ↗