The weMail: Email Marketing, Email Automation, Newsletters, Subscribers & Email Optins for WooCommerce WordPress plugin before 2.1.3 does not properly escape a user-supplied parameter before reflecting it into an HTML attribute on a non-nonce-protected AJAX response, allowing unauthenticated attackers to deliver Reflected Cross-Site Scripting against any authenticated user (including administrators) via a crafted URL.
https://github.com/johnumorujo/published-cves
https://wpscan.com/vulnerability/f00c1853-a4b2-4e91-99b3-fed8acbe6da7/