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Un atacante autenticado puede realizar falsificación de petición del lado del servidor (SSRF) manipulando el parámetro 'client_session_host' durante las peticiones de token de actualización. Esto ocurre cuando un cliente de Keycloak está configurado para usar la 'backchannel.logout.url' con el marcador de posición 'application.session.host'. La explotación exitosa permite al atacante realizar peticiones HTTP desde el contexto de red del servidor de Keycloak, potencialmente sondeando redes internas o APIs internas, lo que lleva a la revelación de información."}],"affected":[{"source":"secalert@redhat.com","affectedData":[{"vendor":"Red Hat","product":"Red Hat build of Keycloak 26.4","defaultStatus":"affected","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhbk/keycloak-operator-bundle","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"versions":[{"version":"26.4.13-1","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat build of Keycloak 26.4","defaultStatus":"affected","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhbk/keycloak-rhel9","cpes":["cpe:/a:redhat:build_keycloak:26.4::el9"],"versions":[{"version":"26.4-19","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red 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