RHSA-2026:68677 — Security Advisory

An update for tomcat is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.