The Oliver POS – A WooCommerce Point of Sale (POS) plugin for WordPress is vulnerable to unauthorized access due to missing capability checks on several functions hooked via AJAX in the includes/class-pos-bridge-install.php file in all versions up to, and including, 2.4.1.8. This makes it possible for authenticated attackers, with subscriber-level access and above, to perform several unauthorized actions like deactivating the plugin, disconnecting the subscription, syncing the status and more.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.