GHSA-GV94-WP4H-VV8P Keycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters such as tabs as separators and tolerates case variations that deviate from RFC 6750 specifications...