Description
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 ArrayIndexOutOfBoundsException, causing the server to return an HTTP 500 error and resulting in a Denial of Service (DoS) for the affected service.
CVSS 5.3EPSS 0.41700000000000004%Risk 0.55
View source- Published
- 2026-05-28 06:16:29
- Affected versions
- unknown
- Type
- Core software
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L