Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse.  Stale policies continue until some other event invalidates the cache or connection termination ends the session.  This permits a user to complete reads and modifications that were recently permitted but now forbidden.  An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.