Everest Forms Pro <= 1.9.12 - Unauthenticated Remote Code Execution via Calculation Field
| CVE | CVE-2026-3300 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | March 30, 2026 |
| Last Updated | March 31, 2026 |
| Researcher |
h0xilo
|
Description
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.
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Vulnerability Details for Everest Forms Pro
| Software Type | Plugin |
|---|---|
| Software Slug | everest-forms-pro |
| Patched? | Yes |
| Remediation | Update to version 1.9.13, or a newer patched version |
| Affected Version |
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| Patched Version |
|
Recent vulnerabilities in Everest Forms Pro
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Everest Forms Pro <= 1.9.12 - Unauthenticated Stored Cross-Site Scripting | CVE-2026-27070 | Kishan Vyas | March 12, 2026 | |
| 2 | Everest Forms (Pro) <= 1.9.7 - Unauthenticated PHP Object Injection via PHAR Deserialization in Form Signature | CVE-2025-8871 | Alex Thomas | November 4, 2025 | |
| 3 | Everest Forms (Pro) <= 1.9.4 - Unauthenticated Path Traversal to Arbitrary File Deletion | CVE-2025-5927 | Phat RiO | June 24, 2025 |
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