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CVE-2026-29146 — Vulnerability in org.apache.tomcat:tomcat-tribes...

HIGH

Apache Tomcat: Padding Oracle vulnerability in EncryptInterceptor

Published April 9, 2026Updated September 10, 2026Source: osv

Summary

Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.

Advisory Timeline

  • First published April 9, 2026 (186 days ago).
  • Last revised September 10, 2026 — 153 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.apache.tomcat:tomcat-tribes to 10.1.53 or later
<!-- Update pom.xml dependency version to 10.1.53 for org.apache.tomcat:tomcat-tribes -->
Maven
Update org.apache.tomcat:tomcat-tribes to 11.0.20 or later
<!-- Update pom.xml dependency version to 11.0.20 for org.apache.tomcat:tomcat-tribes -->
Maven
Update org.apache.tomcat:tomcat-tribes to 9.0.116 or later
<!-- Update pom.xml dependency version to 9.0.116 for org.apache.tomcat:tomcat-tribes -->
Maven
Update org.apache.tomcat:tomcat to 11.0.20 or later
<!-- Update pom.xml dependency version to 11.0.20 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 9.0.116 or later
<!-- Update pom.xml dependency version to 9.0.116 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 10.1.53 or later
<!-- Update pom.xml dependency version to 10.1.53 for org.apache.tomcat:tomcat -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (10)

Affects 1 ecosystem: maven (2).

PackageEcosystemAffectedFixed In
org.apache.tomcat:tomcat-tribes
maven
8.5.100, 8.5.38, 8.5.39, 8.5.40 (+52 more)Range-based data available
org.apache.tomcat:tomcat
maven
8.5.100, 8.5.38, 8.5.39, 8.5.40 (+52 more)Range-based data available
org.apache.tomcat:tomcat-tribes
maven
10.1.50, 10.1.5210.1.53
org.apache.tomcat:tomcat-tribes
maven
11.0.0, 11.0.0-M1, 11.0.0-M10, 11.0.0-M11 (+36 more)11.0.20
org.apache.tomcat:tomcat-tribes
maven
9.0.100, 9.0.102, 9.0.104, 9.0.105 (+81 more)9.0.116
org.apache.tomcat:tomcat
maven
11.0.0, 11.0.0-M1, 11.0.0-M10, 11.0.0-M11 (+36 more)11.0.20
org.apache.tomcat:tomcat
maven
7.0.100, 7.0.103, 7.0.104, 7.0.105 (+4 more)Range-based data available
org.apache.tomcat:tomcat-tribes
maven
7.0.100, 7.0.103, 7.0.104, 7.0.105 (+4 more)Range-based data available
org.apache.tomcat:tomcat
maven
9.0.100, 9.0.102, 9.0.104, 9.0.105 (+81 more)9.0.116
org.apache.tomcat:tomcat
maven
10.1.50, 10.1.5210.1.53

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

References

Frequently Asked Questions

What is CVE-2026-29146?
Apache Tomcat: Padding Oracle vulnerability in EncryptInterceptor This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2026-29146?
CVE-2026-29146 affects org.apache.tomcat:tomcat-tribes and org.apache.tomcat:tomcat. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-29146 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-h468-7pvh-8vr8
BIT-tomcat-2026-29146

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