Description
A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat build of Keycloak 26.4.9
Default version status: unaffected
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform 8
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform 8
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform 8
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
Default version status: affected