The WPC Smart Wishlist for WooCommerce WordPress plugin before 2.9.9 does not sanitise and escape a parameter before outputting it back in an attribute via an AJAX action, leading to a Reflected Cross-Site Scripting issue.
The WPC Smart Wishlist for WooCommerce WordPress plugin before 2.9.4 does not sanitise and escape the key parameter before outputting it back in the wishlist_quickview AJAX action's response (available to any authenticated user), leading to a Reflected Cross-Site Scripting