Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections.
This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected.
Users are recommended to upgrade to version 9.0.107, which fixes the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tomcat-libUpgrade tomcat-webappsUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-admin-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-docs-webappUpgrade tomcat-el-3.0-apiUpgrade tomcat | Aug 22, 2025 | Aug 20, 2025 |
| Amazon Linux Ami 2 | — | Upgrade tomcat-admin-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-webappsUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-el-3.0-apiUpgrade tomcatUpgrade tomcat-libUpgrade tomcat-docs-webappUpgrade tomcat-jsvc | May 20, 2026 | May 20, 2026 |
| Apache Tomcat | — | Upgrade Apache Tomcat to 9.0.107Upgrade Apache Tomcat to the latest available version | Jul 10, 2025 | Jul 10, 2025 |
| Atlassian Bitbucket | — | Upgrade Atlassian Bitbucket to the latest version | Aug 20, 2025 | Aug 19, 2025 |
| Atlassian Jira | — | Upgrade to the latest version of Atlassian JIRA | Jan 21, 2026 | Jan 20, 2026 |
| Debian | — | Upgrade tomcat9 | Jul 14, 2025 | Jul 10, 2025 |
| Freebsd | — | Upgrade tomcat9Upgrade tomcat110Upgrade tomcat101 | Jul 12, 2025 | Jul 10, 2025 |
| Oracle_linux | — | Upgrade tomcat9Upgrade tomcat9-servlet-4.0-apiUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat9-jsp-2.3-apiUpgrade tomcat9-admin-webappsUpgrade tomcat9-webappsUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-docs-webappUpgrade tomcat9-docs-webappUpgrade tomcat9-el-3.0-apiUpgrade tomcatUpgrade tomcat9-libUpgrade tomcat-el-3.0-apiUpgrade tomcat-webapps | Aug 21, 2025 | Jul 10, 2025 |
| Redhat_linux | — | Upgrade tomcat9-el-3.0-apiUpgrade tomcat-webappsUpgrade tomcat9Upgrade tomcat9-webappsUpgrade tomcat-docs-webappUpgrade tomcat9-servlet-4.0-apiUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-el-3.0-apiUpgrade tomcatUpgrade tomcat9-docs-webappUpgrade tomcat9-libNo solution existsUpgrade tomcat9-jsp-2.3-apiUpgrade tomcat9-admin-webappsUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-libUpgrade tomcat-admin-webapps | Jul 14, 2025 | Jul 10, 2025 |
| Suse | — | Upgrade tomcat-servlet-4_0-apiUpgrade tomcat-webappsUpgrade tomcat-embedUpgrade tomcatUpgrade tomcat-docs-webappUpgrade tomcat-javadocUpgrade tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat-el-3_0-apiUpgrade tomcat-jsp-2_3-apiUpgrade tomcat-jsvc | Dec 5, 2025 | Aug 27, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 6, 2025 | Jul 10, 2025 |
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