Insufficient authorization checks in the role field update mechanism and overly permissive capabilities for the `admin form` post type allow for privilege escalation. The `admin form` custom post type uses `capability type` set to `page`, enabling editors to create and edit forms. By submitting POST data to the 'wp-admin/post.php' endpoint, an editor can bypass UI restrictions in `feadmin get user roles()` to include 'administrator' in the `role options` array of an `edit user` form. The `pre update value()` function in `class-role.php` validates that the submitted role exists in the `role options` array but does not verify if the user has permission to assign that role. This allows unauthenticated attackers to register as editors via a public `new user` form, create an `edit user` form with administrator roles, and escalate their privileges to administrator.