Multiple cross-site scripting (XSS) vulnerabilities in the Welcart e-Commerce plugin 1.3.12 for WordPress allow remote attackers to inject arbitrary web script or HTML via (1) unspecified vectors related to purchase_limit or the (2) name, (3) intl, (4) nocod, or (5) time parameter in an add_delivery_method action to wp-admin/admin-ajax.php.