The Menu Cart for WooCommerce WordPress plugin before 3.2.1 does not sanitise and escape cart item variation data before outputting it in its cart slide-out, allowing unauthenticated users to store a Cross-Site Scripting payload that can be delivered to and executed in the session of another user, including a logged-in administrator.
https://wpscan.com/vulnerability/579936d7-183f-4b25-acfd-b15f43eb573c/