CVE-2025-55668: Apache Tomcat: session fixation via rewrite valve

Published Aug 13, 2025
·
Updated

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.

Affected Software

35 affected componentsFixes available
Apache Tomcat>=11.0.0-M1<=11.0.7, >=10.1.0-M1<=10.1.41, >=9.0.0.M1<=9.0.105
maven/org.apache.tomcat:tomcat-catalina>=9.0.0.M1<9.0.106
9.0.106
maven/org.apache.tomcat:tomcat-catalina>=10.1.0-M1<10.1.42
10.1.42
maven/org.apache.tomcat:tomcat-catalina>=11.0.0-M1<11.0.8
11.0.8
Apache Tomcat>=9.0.1<9.0.106
Apache Tomcat>=10.0.0<10.1.42
Apache Tomcat>=11.0.0<11.0.8
Apache Tomcat=9.0.0-milestone1
Apache Tomcat=9.0.0-milestone10
Apache Tomcat=9.0.0-milestone11
Apache Tomcat=9.0.0-milestone12
Apache Tomcat=9.0.0-milestone13
Apache Tomcat=9.0.0-milestone14
Apache Tomcat=9.0.0-milestone15
Apache Tomcat=9.0.0-milestone16
Apache Tomcat=9.0.0-milestone17
Apache Tomcat=9.0.0-milestone18
Apache Tomcat=9.0.0-milestone19
Apache Tomcat=9.0.0-milestone2
Apache Tomcat=9.0.0-milestone20
Apache Tomcat=9.0.0-milestone21
Apache Tomcat=9.0.0-milestone22
Apache Tomcat=9.0.0-milestone23
Apache Tomcat=9.0.0-milestone24
Apache Tomcat=9.0.0-milestone25
Apache Tomcat=9.0.0-milestone26
Apache Tomcat=9.0.0-milestone27
Apache Tomcat=9.0.0-milestone3
Apache Tomcat=9.0.0-milestone4
Apache Tomcat=9.0.0-milestone5
Apache Tomcat=9.0.0-milestone6
Apache Tomcat=9.0.0-milestone7
Apache Tomcat=9.0.0-milestone8
Apache Tomcat=9.0.0-milestone9
IBM API Connect V12 OnPrem<=All

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 9.0.106
  2. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 10.1.42
  3. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 11.0.8
  4. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.8
  5. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.42
  6. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.106

Event History

Aug 13, 2025
CVE Published
via MITRE·01:21 PM
Data Sourced
via MITRE·01:21 PM
DescriptionWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·03:30 PM
Data Sourced
via GitHub·03:30 PM
DescriptionSeverityWeaknessAffected Software
Jul 7, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-55668?

CVE-2025-55668 has significant severity due to its potential for session fixation attacks.

2

How do I fix CVE-2025-55668?

To resolve CVE-2025-55668, upgrade to a patched version of Apache Tomcat that is above the affected versions listed.

3

Which versions of Apache Tomcat are affected by CVE-2025-55668?

CVE-2025-55668 affects Apache Tomcat versions 11.0.0-M1 through 11.0.7, 10.1.0-M1 through 10.1.41, and 9.0.0.M1 through 9.0.105.

4

What type of vulnerability is CVE-2025-55668?

CVE-2025-55668 is a session fixation vulnerability affecting Apache Tomcat.

5

Can older versions of Apache Tomcat be affected by CVE-2025-55668?

Yes, older, end-of-life versions of Apache Tomcat may also be susceptible to CVE-2025-55668.

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