Update the WordPress Thank You Page Customizer for WooCommerce – Increase Your Sales plugin to the latest available version (at least 1.0.14).
Cat discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress Thank You Page Customizer for WooCommerce – Increase Your Sales Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. This vulnerability has been fixed in version 1.0.14.