CVE-2025-3439

Critical

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.

SeverityCritical

CVSS9.8

Exploit probability—

ProductWpeverest Everest Forms

PublishedApr 11, 2025

First seenApr 11, 2025

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

wpeverest everest_forms3.1.2 or later

Affected products

Product	Affected versions	Fixed in
wpeverest everest_forms	v < 3.1.2	3.1.2

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