CVE-2026-29146
Received Received - Intake
Padding Oracle Vulnerability in Apache Tomcat EncryptInterceptor

Publication date: 2026-04-09

Last updated on: 2026-04-14

Assigner: Apache Software Foundation

Description
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.
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Meta Information
Published
2026-04-09
Last Modified
2026-04-14
Generated
2026-06-16
AI Q&A
2026-04-09
EPSS Evaluated
2026-06-15
NVD
CVE-2026-29146
EUVD
EUVD-2026-21012
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
apache tomcat From 11.0.0 (inc) to 11.0.20 (exc)
apache tomcat From 9.0.13 (inc) to 9.0.116 (exc)
apache tomcat From 10.0.0 (inc) to 10.1.53 (exc)
apache tomcat From 7.0.100 (inc) to 7.0.109 (inc)
apache tomcat From 8.5.38 (inc) to 8.5.100 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-209 The product generates an error message that includes sensitive information about its environment, users, or associated data.
CWE-642 The product stores security-critical state information about its users, or the product itself, in a location that is accessible to unauthorized actors.
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Impact Analysis

The vulnerability could allow an attacker to decrypt sensitive information that is supposed to be protected by encryption within Apache Tomcat. This could lead to unauthorized access to confidential data or compromise the security of applications relying on Tomcat's encryption.

Mitigation Strategies

Users are recommended to upgrade Apache Tomcat to versions 11.0.19, 10.1.53, or 9.0.116, which contain fixes for this Padding Oracle vulnerability in the EncryptInterceptor.

Executive Summary

This vulnerability is a Padding Oracle issue found in Apache Tomcat's EncryptInterceptor when used with its default configuration. A Padding Oracle vulnerability allows an attacker to decrypt encrypted data by exploiting the way padding errors are handled during decryption.

Compliance Impact

The provided information does not specify how the Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor affects compliance with common standards and regulations such as GDPR or HIPAA.

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