The Feather Login Page plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'getListOfUsers' function in versions starting from 1.0.7 up to, and including, 1.1.1. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to access the login links, which can be used for privilege escalation.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.