CVE-2025-55668
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
Session Fixation vulnerability in Apache Tomcat via rewrite valve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2025-55668
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2025-55668.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2026:18916
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 10.1.52-1~deb12u1 |
| debian | forky | fixed | 10.1.46-1 |
| debian | sid | fixed | 10.1.46-1 |
| debian | trixie | fixed | 10.1.52-1~deb13u1 |
| debian | bullseye | fixed | 9.0.70-2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Maven | org.apache.tomcat:tomcat-catalina | >=11.0.0-M1,<11.0.8 | 11.0.8 |
| Maven | org.apache.tomcat:tomcat-catalina | >=10.1.0-M1,<10.1.42 | 10.1.42 |
| Maven | org.apache.tomcat:tomcat-catalina | >=9.0.0.M1,<9.0.106 | 9.0.106 |
References
- https://access.redhat.com/errata/RHSA-2026:18916
- https://nvd.nist.gov/vuln/detail/CVE-2025-55668
- https://github.com/apache/tomcat/commit/8621e4c6ba2c916a41eb34cb0f781171ead33fb6
- https://github.com/apache/tomcat/commit/90306d971bb8b8393336d893644124fb2ca11d21
- https://github.com/apache/tomcat/commit/9c3673ba04009377cb0c81ccb6cf5078aec1aa95
- https://github.com/apache/tomcat
- https://lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qdvbbqs47
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
- http://www.openwall.com/lists/oss-security/2025/08/13/3
- https://www.suse.com/security/cve/CVE-2025-55668.html
- https://security-tracker.debian.org/tracker/CVE-2025-55668
Verify integrity in audit chain (admin only). AS-IS.