Apache Tomcat up to 9.0.105/10.1.41/11.0.7 session fixiation

Summaryinfo

A vulnerability marked as critical has been reported in Apache Tomcat up to 9.0.105/10.1.41/11.0.7. This impacts an unknown function. Performing a manipulation results in session fixiation. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is identified as CVE-2025-55668. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 9.0.105/10.1.41/11.0.7. It has been classified as critical. This affects an unknown code. The manipulation with an unknown input leads to a session fixiation vulnerability. CWE is classifying the issue as CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released by Greg K. It is possible to read the advisory at lists.apache.org. This vulnerability is uniquely identified as CVE-2025-55668 since 08/13/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/01/2025).

The vulnerability scanner Nessus provides a plugin with the ID 260004 (Linux Distros Unpatched Vulnerability : CVE-2025-55668), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.0.106, 10.1.42 or 11.0.8 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (260004) and CERT Bund (WID-SEC-2025-1826). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Apache Tomcat

Productinfo

Type

• Application Server Software

Vendor

• Apache

Name

• Tomcat

Version

• 9.0.105
• 10.1.0
• 10.1.1
• 10.1.2
• 10.1.3
• 10.1.4
• 10.1.5
• 10.1.6
• 10.1.7
• 10.1.8
• 10.1.9
• 10.1.10
• 10.1.11
• 10.1.12
• 10.1.13
• 10.1.14
• 10.1.15
• 10.1.16
• 10.1.17
• 10.1.18
• 10.1.19
• 10.1.20
• 10.1.21
• 10.1.22
• 10.1.23
• 10.1.24
• 10.1.25
• 10.1.26
• 10.1.27
• 10.1.28
• 10.1.29
• 10.1.30
• 10.1.31
• 10.1.32
• 10.1.33
• 10.1.34
• 10.1.35
• 10.1.36
• 10.1.37
• 10.1.38
• 10.1.39
• 10.1.40
• 10.1.41
• 11.0.0
• 11.0.1
• 11.0.2
• 11.0.3
• 11.0.4
• 11.0.5
• 11.0.6
• 11.0.7

License

• open-source

Support

• end of life

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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Be aware that VulDB is the high quality source for vulnerability data.

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