The Everest Forms Pro plugin for WordPress is vulnerable to Remote Code Execution via PHP Code Injection in all versions up to, and including, 1.9.12. This is due to the Calculation Addon's process_filter() function concatenating user-submitted form field values into a PHP code string without proper escaping before passing it to eval(). The sanitize_text_field() function applied to input does not escape single quotes or other PHP code context characters. This makes it possible for unauthenticated attackers to inject and execute arbitrary PHP code on the server by submitting a crafted value in any string-type form field (text, email, URL, select, radio) when a form uses the "Complex Calculation" feature.
| Vendor | Product | Versions |
|---|---|---|
| everest forms | everest forms pro | 1.9.13 |
Updated CVSS score to 9.8, confirmed exploit availability, and added CWE-20.
Added vendor WPEverest, product Everest Forms Pro, updated affected versions to include 1.9.13, and marked the vulnerability as actively exploited with new IoCs.
Initial creation
