Metform Elementor Contact Form Builder <= 3.3.1 - Authenticated (Subscriber+) Information Disclosure via mf_last_name shortcode

The Metform Elementor Contact Form Builder for WordPress is vulnerable to Information Disclosure via the 'mf_last_name' shortcode in versions up to, and including, 3.3.1. This allows authenticated attackers, with subscriber-level capabilities or above to obtain sensitive information about arbitrary form submissions, specifically the submitter's last name.