WooCommerce EAN Payment Gateway < 6.1.0 - Missing Authorization to Authenticated (Contributor+) EAN Update

The WooCommerce EAN Payment Gateway plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the refresh_order_ean_data AJAX action in versions up to 6.1.0. This makes it possible for authenticated attackers with contributor-level access and above, to update EAN numbers for orders.