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This advisory has been withdrawn because it is a duplicate of GHSA-w8gr-xwp4-r9f7.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.