critical9.8
CVE-2025-31651
Apache Tomcat Rewrite rule bypass
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.apache.tomcat:tomcat-catalina | >= 9.0.76, <= 9.0.102 | 9.0.104 |
| maven | org.apache.tomcat.embed:tomcat-embed-core | >= 9.0.76, <= 9.0.102 | 9.0.104 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Tomcat | from 9.0.0 before 9.0.104 from 10.1.0 before 10.1.40 from 11.0.0 before 11.0.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://lists.apache.org/list.html?announce@tomcat.apache.org
- http://www.openwall.com/lists/oss-security/2025/04/28/3
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
- https://github.com/advisories/GHSA-ff77-26x5-69cr
- https://nvd.nist.gov/vuln/detail/CVE-2025-31651
- 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