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Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tomcat-libUpgrade tomcat-admin-webappsUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcatUpgrade tomcat-docs-webappUpgrade tomcat-el-3.0-api | Oct 11, 2026 | Sep 17, 2026 |
| Amazon Linux Ami 2 | — | Upgrade tomcatUpgrade tomcat-jsvcUpgrade tomcat-libUpgrade tomcat-docs-webappUpgrade tomcat-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-admin-webappsUpgrade tomcat-el-3.0-api | May 20, 2026 | May 20, 2026 |
| Apache Tomcat | — | Upgrade Apache Tomcat to the latest available versionUpgrade Apache Tomcat to 10.1.53Upgrade Apache Tomcat to 9.0.116Upgrade Apache Tomcat to 11.0.20 | Apr 10, 2026 | Apr 9, 2026 |
| Debian | — | Upgrade tomcat9Upgrade tomcat10Upgrade tomcat11 | Apr 13, 2026 | Apr 13, 2026 |
| Redhat_linux | — | Upgrade tomcat-el-3.0-apiUpgrade jws6-tomcat-el-5.0-apiUpgrade tomcat-libUpgrade tomcat9Upgrade jws6-tomcatUpgrade jws6-tomcat-admin-webappsNo solution existsUpgrade jws6-tomcat-jsp-3.1-apiUpgrade tomcatUpgrade tomcat9-webappsUpgrade jws6-tomcat-selinuxUpgrade tomcat9-servlet-4.0-apiUpgrade tomcat-jsp-2.3-apiUpgrade tomcat9-libUpgrade tomcat9-docs-webappUpgrade tomcat-docs-webappUpgrade tomcat9-admin-webappsUpgrade jws6-tomcat-libUpgrade tomcat9-el-3.0-apiUpgrade tomcat-admin-webappsUpgrade jws6-tomcat-webappsUpgrade jws6-tomcat-servlet-6.0-apiUpgrade jws6-tomcat-docs-webappUpgrade tomcat9-jsp-2.3-apiUpgrade tomcat-webappsUpgrade jws6-tomcat-javadocUpgrade tomcat-servlet-4.0-api | May 28, 2026 | Apr 9, 2026 |
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