CVE-2025-55668: Apache Tomcat Apache Tomcat Session Fixation Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-23hv-mwm6-g8jf
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CVSS 6.5
CWE-384
Published
Advisory Summary

CVE-2025-55668 is a MODERATE (CVSS 6.5) apache tomcat session fixation vulnerability vulnerability (CWE-384: Session Fixation) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves apache tomcat session fixation vulnerability. Remediation is available by upgrading affected packages to version 11.0.8, 10.1.42, 9.0.106.

CVE-2025-55668 at a Glance

CVE Identifier CVE-2025-55668
GHSA Identifier GHSA-23hv-mwm6-g8jf
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-384: Session Fixation
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-55668

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat:tomcat-catalina fixed: 11.0.8 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-catalina</artifactId>
    <version>11.0.8</version>
</dependency>
org.apache.tomcat:tomcat-catalina fixed: 10.1.42 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-catalina</artifactId>
    <version>10.1.42</version>
</dependency>
org.apache.tomcat:tomcat-catalina fixed: 9.0.106 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-catalina</artifactId>
    <version>9.0.106</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 11.0.8 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>11.0.8</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 10.1.42 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>10.1.42</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 9.0.106 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>9.0.106</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.tomcat

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2025-55668, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 11.0.8), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-384: Session Fixation, where 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. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-55668 Affected Apache Tomcat Versions

6 component(s)
Fixed Versions:
11.0.810.1.429.0.106
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat:tomcat-catalina
maven/org.apache.tomcat/tomcat-catalina
Maven
≥ 11.0.0-M1
< 11.0.8
11.0.8
org.apache.tomcat:tomcat-catalina
maven/org.apache.tomcat/tomcat-catalina
Maven
≥ 10.1.0-M1
< 10.1.42
10.1.42
org.apache.tomcat:tomcat-catalina
maven/org.apache.tomcat/tomcat-catalina
Maven
≥ 9.0.0.M1
< 9.0.106
9.0.106
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 11.0.0-M1
< 11.0.8
11.0.8
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 10.1.0-M1
< 10.1.42
10.1.42
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 9.0.0.M1
< 9.0.106
9.0.106

References

NVD — CVE-2025-55668 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55668
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/8621e4c6ba2c916a41eb34cb0f781171ead33fb6
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/90306d971bb8b8393336d893644124fb2ca11d21
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/9c3673ba04009377cb0c81ccb6cf5078aec1aa95
Apache Tomcat Source Repository REPOSITORY
https://github.com/apache/tomcat
lists.apache.org/thread/v6bknr96rl7l... WEB
https://lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qdvbbqs47
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-10.html
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-11.html
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-9.html
Apache Tomcat Security Information SECURITY
http://www.openwall.com/lists/oss-security/2025/08/13/3

Frequently Asked Questions

What is CVE-2025-55668?
CVE-2025-55668 is a security vulnerability in Apache Tomcat involving Apache Tomcat Session Fixation vulnerability under CWE-384: Session Fixation.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 11.0.8, 10.1.42, 9.0.106 across affected packages: org.apache.tomcat:tomcat-catalina, org.apache.tomcat.embed:tomcat-embed-core.
What version fixes CVE-2025-55668?
Upgrading to 11.0.8, 10.1.42, 9.0.106 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tomcat-catalina affected?
Yes, org.apache.tomcat:tomcat-catalina is affected in releases prior to 11.0.8, 10.1.42, 9.0.106. Upgrade your dependency to 11.0.8, 10.1.42, 9.0.106 or later.
Is tomcat-embed-core affected?
Yes, org.apache.tomcat.embed:tomcat-embed-core is affected in releases prior to 11.0.8, 10.1.42, 9.0.106. Upgrade your dependency to 11.0.8, 10.1.42, 9.0.106 or later.
What is the CVSS score of CVE-2025-55668?
CVE-2025-55668 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2025-55668?
CVE-2025-55668 is classified under CWE-384: Session Fixation (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.).
How can I check Maven dependencies for CVE-2025-55668?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-23hv-mwm6-g8jf",
  "modified" : "2026-07-01T16:19:56Z",
  "published" : "2025-08-13T15:30:34Z",
  "aliases" : [ "CVE-2025-55668" ],
  "summary" : "Apache Tomcat Session Fixation vulnerability",
  "details" : "Session Fixation vulnerability in Apache Tomcat via rewrite valve.\n\nThis 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.\nOlder, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
  } ],
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      "name" : "org.apache.tomcat:tomcat-catalina"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
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      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
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    },
    "ranges" : [ {
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      } ]
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  }, {
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      } ]
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  }, {
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    },
    "ranges" : [ {
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      }, {
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-55668"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/8621e4c6ba2c916a41eb34cb0f781171ead33fb6"
  }, {
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    "url" : "https://github.com/apache/tomcat/commit/90306d971bb8b8393336d893644124fb2ca11d21"
  }, {
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    "url" : "https://github.com/apache/tomcat/commit/9c3673ba04009377cb0c81ccb6cf5078aec1aa95"
  }, {
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    "url" : "https://github.com/apache/tomcat"
  }, {
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    "url" : "https://lists.apache.org/thread/v6bknr96rl7l1qxkl1c03v0qdvbbqs47"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-10.html"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-11.html"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-9.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2025/08/13/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-384" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-13T23:24:19Z",
    "nvd_published_at" : "2025-08-13T14:15:33Z"
  }
}