Issued at: 2026-09-19
Updated at: 2026-09-19
Advisory content derived from Red Hat RHSA-2026:68677, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: tomcat security update
Description
Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.
Security Fix(es):
* tomcat-coyote: Apache Tomcat: Authentication bypass via digest authentication (CVE-2026-43512)
* tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated (CVE-2026-41293)
* tomcat-coyote: Apache Tomcat: Information disclosure due to HTTP Authentication Header exposure during WebSocket authentication. (CVE-2026-42498)
* tomcat-coyote: tomcat: Improper Authorization allows security bypass (CVE-2026-43515)
* tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm (CVE-2026-43513)
* tomcat: Apache Tomcat: Authentication bypass via missing critical step in JNDIRealm GSSAPI configuration (CVE-2026-55957)
* tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve (CVE-2026-59083)
* tomcat: Apache Tomcat: Insufficient documentation for EncryptInterceptor may lead to insecure configurations (CVE-2026-59084)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.