The FOX - Currency Switcher Professional for WooCommerce plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to and including 1.4.6. This is due to the get_value() function in classes/fixed/fixed_user_role.php trusting the attacker-controlled $_REQUEST['wooc_order_user_roles'] parameter to determine the user's role context for role-based price resolution without any validation, allowing it to override the legitimate role data derived from the authenticated user's session object via $user-roles. This makes it possible for authenticated attackers, with Subscriber-level access and above, to impersonate higher-privileged roles, such as wholesale customer or administrator, and obtain discounted or otherwise restricted pricing that should not be available to their actual role.

This vulnerability only has practical impact when the fixed user-role pricing feature is enabled and at least one product has a privileged-role price configured.