CVE-2026-3300 Details
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.
A remote code execution vulnerability has been identified in the Everest Forms Pro plugin for WordPress, affecting all versions through 1.9.12. The issue arises in the Calculation Addon, where the process_filter() function improperly concatenates user-submitted form field values into a PHP code string. This concatenation occurs without adequate escaping before the code is evaluated with eval(). The applied sanitize_text_field() function fails to escape single quotes and other characters relevant to PHP code context. As a result, unauthenticated attackers can inject and execute arbitrary PHP code on the server. Exploitation involves submitting a crafted value in any string-type form field—such as text, email, URL, select, or radio—when the form utilizes the 'Complex Calculation' feature.
Users are advised to update the Everest Forms Pro plugin to version 1.9.13 or a newer patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 31, 2026CISA-ADP
Assessed Mar 31, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Everest Forms Pro | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 31, 2026 | New CVE Received | [email protected] |