Buy one click WooCommerce <= 2.2.9 - Missing Authorization to Authenticated (Subscriber+) Order Deletion

The Buy one click WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the removeorder AJAX action in all versions up to, and including, 2.2.9. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete Buy one click WooCommerce orders.