keycloak: Keycloak: Denial of Service via malformed Authorization header

A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an...

CVE-2026-9803 Keycloak: keycloak: denial of service via malformed authorization header

A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an...

PT-2026-44196

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw in the ClientRegistrationAuth component allows a remote unauthenticated attacker to cause a Denial of Service DoS. By sending a specially crafted POST request with a malformed...