CVE-2026-101335

01/Description

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to, and including, 1.58.1. This is due to the forminator_replace_quiz_form_data() helper invoking do_shortcode() on the fully expanded notification body once the {quiz_result} merge tag has been substituted, while the earlier-substituted {user_agent} and {refer_url} merge tags carry unauthenticated attacker-controlled bytes (the User-Agent header and the referer_url POST parameter) through sanitize_text_field()/esc_html(), neither of which strip the '[' and ']' shortcode delimiters. This makes it possible for unauthenticated attackers to execute arbitrary WordPress shortcodes registered on the site by submitting a quiz whose notification template contains {quiz_result}; the resulting impact depends on the shortcodes exposed by other installed plugins/themes and can range from arbitrary content injection to information disclosure.

02/References7

• plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/libra…
• plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/libra…
• plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/libra…
• plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/libra…
• plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/libra…
• plugins.trac.wordpress.org/changeset?reponame=&old=3745883%40fo…
• www.wordfence.com/threat-intel/vulnerabilities/id/27640d44-1474…