Vulnerability Description
The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the 'field_value' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wpeverest | Everest Forms | < 3.1.2 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/everest-forms/trunk/includes/admin/viProduct
- https://plugins.trac.wordpress.org/changeset/3268742/Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0e5617a2-5670-4d98-a36Third Party Advisory
FAQ
What is CVE-2025-3439?
CVE-2025-3439 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 v...
How severe is CVE-2025-3439?
CVE-2025-3439 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-3439?
Check the references section above for vendor advisories and patch information. Affected products include: Wpeverest Everest Forms.