A broken access control flaw was found in Foreman. This flaw allows an authenticated user with host-edit permissions to retarget an existing lookup value override to a different host by modifying the match field via nested host attributes, bypassing authorization checks. The injected values are served by the ENC/classification pipeline to configuration management tools, potentially resulting in unauthorized modification of managed host configurations across organization and location boundaries.

Authenticated Foreman account with edit rights on at least one host (edit_hosts permission). The attacker needs two requests: first to create a legitimate override on their own host, then to retarget its match field to the victim host's FQDN. A lookup key with fqdn in its path must exist.