The wps-hide-login plugin before 1.5.3 for WordPress has an action=rp&key&login protection bypass.
The wps-hide-login plugin before 1.5.3 for WordPress has a protection bypass via wp-login.php in the Referer field.
The wps-child-theme-generator plugin before 1.2 for WordPress has classes/helpers.php directory traversal.
The wps-hide-login plugin before 1.5.3 for WordPress has an adminhash protection bypass.