CVE-2025-31651
Apache Tomcat: Bypass of rules in Rewrite Valve
LOW 2.7EPSS 4.2%
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 [FIXED_VERSION], which fixes the issue.
- Affected
- Apache Software Foundation · Apache Tomcat
- CVSS v4.0 GitHub
- 2.7 LOW
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 - CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 4.19% chance of exploitation in the next 30 days, 91st percentile
- Published
- 2025-04-28
- Updated
- 2026-02-26
Proof-of-concept exploits (1)
- gregk4sec/CVE-2025-316510★ · 2026-03-09
Security advisories
- https://lists.apache.org/list.html?announce@tomcat.apache.org
- http://www.openwall.com/lists/oss-security/2025/04/28/3
- advisories/GHSA-ff77-26x5-69cr