Return Refund and Exchange For WooCommerce vulnerabilities

The Return Refund and Exchange For WooCommerce plugin in versions up to 4.6.4 contains a Broken Access Control vulnerability. An unauthenticated attacker can bypass access control mechanisms.

The Return Refund and Exchange For WooCommerce WordPress plugin before version 4.6.4 does not correctly verify the ownership of guest orders in some of the AJAX actions it exposes to unauthenticated users. This allows them to read private order messages, post messages and attachments in the customer's name, and cancel return requests on any guest order.

The Return Refund and Exchange For WooCommerce plugin for WordPress up to version 4.5.5 is vulnerable to Insecure Direct Object Reference in the AJAX endpoint 'wps_rma_cancel_return_request' due to missing validation on a user controlled key. This makes it possible for authenticated attackers with Subscriber-level access and above to delete other users' refund requests.