Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0.M1 through 9.0.112. Older, EOL versions are also affected. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fixes the issue.
This issue has been addressed in the following products: Red Hat JBoss Web Server 6.2.2 Via RHSA-2026:12195 https://access.redhat.com/errata/RHSA-2026:12195
This issue has been addressed in the following products: Red Hat JBoss Web Server 6.2 on RHEL 10 Red Hat JBoss Web Server 6.2 on RHEL 8 Red Hat JBoss Web Server 6.2 on RHEL 9 Via RHSA-2026:12194 https://access.redhat.com/errata/RHSA-2026:12194