Autopay / Blue Media for WooCommerce < 5.0.1 - Unauthenticated Stored XSS via CSS Editor

Description

The plugin does not perform any capability or nonce check before saving a styling option from a public request, and does not escape that value when it is later output on the checkout page, allowing unauthenticated attackers to store JavaScript that executes in the browser of any user, including administrators, who loads the checkout page.