Session Fixation Vulnerability in Apache Tomcat by Apache
CVE-2025-55668

6.5MEDIUM

Key Information:

Vendor

Apache
Status
Apache Tomcat
Vendor
CVE Published:
13 August 2025

What is CVE-2025-55668?

A session fixation vulnerability exists in Apache Tomcat due to improper handling in the rewrite valve. This issue allows attackers to manipulate user sessions, potentially compromising sensitive information and leading to unauthorized access. Users are urged to update to the latest versions—11.0.8, 10.1.42, or 9.0.106—to mitigate this vulnerability and ensure the security of their applications.

Affected Version(s)

Apache Tomcat 11.0.0-M1 <= 11.0.7

Apache Tomcat 10.1.0-M1 <= 10.1.41

Apache Tomcat 9.0.0.M1 <= 9.0.105

References

https://lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qd...
vendor-advisory

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Greg K (https://github.com/gregk4sec)
.
CVE-2025-55668 : Session Fixation Vulnerability in Apache Tomcat by Apache