The WPCafe – Restaurant Menu, Online Ordering for WooCommerce, Pickup / Delivery and Table Reservation plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.2.23 via the wpc_check_for_submission function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application.
https://plugins.trac.wordpress.org/changeset/3084054/wp-cafe/trunk/core/action/wpc-ajax-action.php
https://plugins.trac.wordpress.org/browser/wp-cafe/trunk/core/action/wpc-ajax-action.php#L76