CVE-2026-94589: Htplugins Extensions For CF7 Contact Form 7 Database, Conditional Fields And Redirection

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

The Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection) plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.4.5 via the extcf7_submit function. This is due to missing file extension, MIME type, and size validation in the signature field's validation_filter(), combined with the absence of PHP-execution guards in the upload directory and a sanitize_file_name() bypass that converts shell.php- into shell.php. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.

Affected products

• Htplugins Extensions For CF7 Contact Form 7 Database, Conditional Fields And Redirection: up to and including 3.4.5

Published 2026-10-10. Last modified 2026-10-10.