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CVE-2026-29146

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductApache Tomcat
PublishedApr 9, 2026
First seenApr 9, 2026
Weakness typeCWE-209CWE-209CWE-642CWE-642CWE-1240CWE-1240

How to fix

Update
  • apache tomcat9.0.116, 10.1.53, 11.0.20 or later
  • org.apache.tomcat:tomcat-tribes9.0.116, 10.1.53, 11.0.20 or later
  • org.apache.tomcat:tomcat9.0.116, 10.1.53, 11.0.20 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
apache tomcat7.0.100 ≤ v ≤ 7.0.109, 8.5.38 ≤ v ≤ 8.5.100, 9.0.13 ≤ v < 9.0.116, 10.0.0 ≤ v < 10.1.53, 11.0.0 ≤ v < 11.0.209.0.116, 10.1.53, 11.0.20
org.apache.tomcat:tomcat-tribesMaven9.0.13 ≤ v < 9.0.116, 10.1.50 ≤ v < 10.1.53, 11.0.0-M1 ≤ v < 11.0.20, 8.5.38 ≤ v ≤ 8.5.100, 7.0.100 ≤ v ≤ 7.0.1099.0.116, 10.1.53, 11.0.20
org.apache.tomcat:tomcatMaven9.0.13 ≤ v < 9.0.116, 10.1.50 ≤ v < 10.1.53, 11.0.0-M1 ≤ v < 11.0.20, 8.5.38 ≤ v ≤ 8.5.100, 7.0.100 ≤ v ≤ 7.0.1099.0.116, 10.1.53, 11.0.20

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