CVE-2026-18659 Unauthenticated authorization bypass in ConstraintSecurityHandler - HTTP method-omission matched by substring

In Eclipse Jetty, across various versions of jetty-security, and jetty-eeN-security, and jetty-eeN-servlet, the Jakarta Spec constraints defined as http-method-omission can be bypassed by using substrings of the defined HTTP Methods...

CVE-2026-18659

An unauthenticated authorization bypass exists in Eclipse Jetty across multiple versions of jetty-security, jetty-eeN-security, and jetty-eeN-servlet. The vulnerability is caused by the ConstraintSecurityHandler incorrectly matching http-method-omission constraints using substrings instead of exa...