The EU/UK VAT Manager for WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the alg_wc_eu_vat_exempt_vat_from_admin() function in all versions up to, and including, 2.12.12. This makes it possible for unauthenticated attackers to update the VAT status for any order.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.