WPC Smart Wishlist for WooCommerce <= 5.0.4 - Missing Authorization to Authenticated (Subscriber+) Information Exposure

The WPC Smart Wishlist for WooCommerce plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'wishlist_quickview' AJAX action in all versions up to, and including, 5.0.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to view other user's wishlist data and information.