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CVE-2025-55668

MediumPublished

Apache Tomcat: session fixation via rewrite valve

Published: Aug 13, 2025
Updated: Nov 4, 2025
Assigning CNA: apache
Evidence observed: Aug 8, 2026

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS probability estimate

0.9%

Low · next 30 days

Percentile: 56.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2025-55668PoC
Apache Tomcat - Session fixation via rewrite valve

Responsible use

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