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Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.
Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tomcatUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-docs-webappUpgrade tomcat-el-3.0-apiUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat-webapps | Oct 11, 2026 | Sep 17, 2026 |
| Amazon Linux Ami 2 | — | Upgrade tomcat-jsvcUpgrade tomcat-libUpgrade tomcat-el-3.0-apiUpgrade tomcat-webappsUpgrade tomcat-docs-webappUpgrade tomcat-jsp-2.3-apiUpgrade tomcatUpgrade tomcat-admin-webappsUpgrade tomcat-servlet-4.0-api | Jul 21, 2026 | Jul 21, 2026 |
| Apache Tomcat | — | Upgrade Apache Tomcat to 9.0.119Upgrade Apache Tomcat to the latest available versionUpgrade Apache Tomcat to 11.0.23Upgrade Apache Tomcat to 10.1.56 | Jun 30, 2026 | Jun 29, 2026 |
| Debian | — | Upgrade tomcat9 | Jul 1, 2026 | Jul 1, 2026 |
| Redhat_linux | — | Upgrade tomcat-docs-webappUpgrade tomcat9Upgrade tomcat-el-3.0-apiUpgrade tomcatUpgrade tomcat9-webappsUpgrade tomcat9-docs-webappUpgrade tomcat9-servlet-4.0-apiUpgrade tomcat9-el-3.0-apiUpgrade tomcat9-jsp-2.3-apiUpgrade tomcat9-admin-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-webappsUpgrade tomcat-jsp-2.3-apiNo solution existsUpgrade tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat9-lib | Jul 17, 2026 | Jun 29, 2026 |
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