The Admin and Customer Messages After Order for WooCommerce: OrderConvo plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the `get_order_by_id()` function in all versions up to, and including, 14. This makes it possible for unauthenticated attackers to view sensitive WooCommerce order details and private conversation messages between customers and store administrators for any order by supplying an arbitrary order ID.
