The ultimate-faqs plugin before 1.8.22 for WordPress has XSS.
The Ultimate FAQ WordPress plugin before 2.1.2 does not have capability and CSRF checks in the ewdufaqwelcomeaddfaq and ewdufaqwelcomeaddfaqpage AJAX actions, available to any authenticated users. As a result, any users, with a role as low as Subscriber could create FAQ and FAQ questions