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

Vulnerability Description

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.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/1c866d8d-399c-4bda-a3c9-17c7e5d2ffb8?source=cve
• https://plugins.trac.wordpress.org/browser/metform/trunk/base/shortcode.php?rev=2845078