CVE-2026-78383

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.0.M1 through 9.0.121 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.0 through 7.0.109

Description An issue involving the allocation of resources without limits or throttling allows an unauthenticated AJP request to pin an AJP processing thread, which can result in a denial of service.

Recommendations Upgrade to version 11.0.26 Upgrade to version 10.1.60 Upgrade to version 9.0.122