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Vulnerability record · CVE-2025-3439 · published 11 April 2025

CVE-2025-3439: Wpeverest everest forms deserialization of untrusted data vulnerability

Wpeverest · Everest Forms

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.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 33.8% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://plugins.trac.wordpress.org/browser/everest-forms/trunk/includes/admin/views/html-admin-page-entries-view.php#L14 Product
https://plugins.trac.wordpress.org/changeset/3268742/ Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/0e5617a2-5670-4d98-a36b-942f71634642?source=cve Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-3439), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.