GHSA-r29c-68gh-xp6x Apache Tomcat - HTTP/2 request headers not validated

• Maven org.apache.tomcat.embed:tomcat-embed-core: >= 8.5.0, < 9.0.118 → fixed in 9.0.118 • Maven org.apache.tomcat.embed:tomcat-embed-core: >= 10.1.0-M1, < 10.1.55 → fixed in 10.1.55 • Maven org.apache.tomcat.embed:tomcat-embed-core: >= 11.0.0-M1, < 11.0.22 → fixed in 11.0.22 • Maven org.apache.tomcat:tomcat: >= 8.5.0, < 9.0.118 → fixed in 9.0.118 • Maven org.apache.tomcat:tomcat: >= 10.1.0-M1, < 10.1.55 → fixed in 10.1.55 • Maven org.apache.tomcat:tomcat: >= 11.0.0-M1, < 11.0.22 → fixed in 11.0.22 • Maven org.apache.tomcat:tomcat-coyote: >= 8.5.0, < 9.0.118 → fixed in 9.0.118 • Maven org.apache.tomcat:tomcat-coyote: >= 10.1.0-M1, < 10.1.55 → fixed in 10.1.55 • Maven org.apache.tomcat:tomcat-coyote: >= 11.0.0-M1, < 11.0.22 → fixed in 11.0.22

Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected Description: HTTP/2 request headers were not validated which may have triggered unexpected application behaviour if the application (quite reasonably) assumed that header value exposed through the Servlet API would be specification compliant. Mitigation: Users of the affected versions should apply one of the following mitigations: • Upgrade to Apache Tomcat 11.0.22 or later • Upgrade to Apache Tomcat 10.1.55 or later • Upgrade to Apache Tomcat 9.0.118 or later Credit: This issue was identified by Dawit Jeong (@dawitngoliath)