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CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade tomcat-el-3.0-apiUpgrade tomcat-docs-webappUpgrade tomcatUpgrade tomcat-jsvcUpgrade tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-jsp-2.3-api | Oct 19, 2026 | Oct 19, 2026 |
| Apache Tomcat | — | Upgrade Apache Tomcat to 9.0.122Upgrade Apache Tomcat to the latest available versionUpgrade Apache Tomcat to 11.0.26Upgrade Apache Tomcat to 10.1.60 | Sep 24, 2026 | Sep 23, 2026 |
| Redhat_linux | — | No solution exists | Oct 5, 2026 | Sep 23, 2026 |
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