Metform Elementor Contact Form Builder <= 3.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via mf shortcode

The Metform Elementor Contact Form Builder for WordPress is vulnerable to Cross-Site Scripting by using the 'mf' shortcode to echo unescaped form submissions in versions up to, and including, 3.3.0. This allows authenticated attackers, with contributor-level permissions or above, to inject arbitrary web scripts in pages that will execute when the victim visits a specific link. Note that getting the JavaScript to execute still requires user interaction as the victim must visit a crafted link with the form entry id, but the script itself is stored in the site database.

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: MetForm 3.3.1 closes this, and updating the plugin is the step that ends it.

• Firewall
• Alerts