PPOM for WooCommerce < 24.0 - Subscriber+ Settings Update to Stored XSS

The PPOM for WooCommerce WordPress plugin before 24.0 does not have authorisation and CSRF checks in the ppom_settings_panel_action AJAX action, allowing any authenticated to call it and set arbitrary settings. Furthermore, due to the lack of sanitisation and escaping, it could lead to Stored XSS issues

The woocommerce-product-addon plugin before 18.4 for WordPress has XSS via an import of a new meta data structure.