| Package | Affected versions | Patched versions |
|---|---|---|
| org.keycloak:keycloak-services | ≥ 26.5.0, < 26.6.3≤ 26.4.7 | 26.6.3 |
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.
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