Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-w8gr-xwp4-r9f7. This link is maintained to preserve external references.

Original Description A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-gc7q-jgjv-vjr2. This link is maintained to preserve external references.

Original Description A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.