The King Addons for Elementor WordPress plugin before 51.1.76 does not escape a user-supplied grid setting before reflecting it into an HTML attribute in an unauthenticated AJAX response, allowing attackers to execute arbitrary JavaScript in the browser of a visitor who is tricked into loading a crafted page.
https://wpscan.com/vulnerability/667d1f8d-fcdb-498f-abda-5655a5af7591/