FormBuilder <= 1.08 - Stored Cross-Site Scripting via CSRF

The plugin does not have CSRF checks in place when creating/updating and deleting forms, and does not sanitise as well as escape its form field values. As a result, attackers could make logged in admin update and delete arbitrary forms via a CSRF attack, and put Cross-Site Scripting payloads in them.

PoC

Edit a form and put XSS payloads: Delete a form: https://example.com/wp-admin/tools.php?page=formbuilder.php&amp;fbtag;=&amp;pageNumber;=&amp;fbaction;=removeForm&amp;fbid;=2