The WPOrLogin WordPress plugin before 3.1.0 does not perform a capability check or validate a nonce before updating its hidden-login URL settings, which could allow unauthenticated attackers to reassign the login, registration and password-recovery slugs and lock the administrator out of the login interface.
https://wpscan.com/vulnerability/1a5731c4-1bca-4136-bfa8-37e30e86c588/