CVE-2026-3296

CVE-2026-3296 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 2 public exploits from researchers including exploitintel, xxconi.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2026-3296, demonstrating PHP object injection leading to RCE in WPEverest Everest Forms ≤ 3.4.3. The PoC includes a Docker-based lab environment, a custom gadget plugin, and a Python script to trigger the vulnerability.

The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's native unserialize() on stored entry meta values without passing the allowed_classes parameter. This makes it possible for unauthenticated attackers to inject a serialized PHP object payload through any public Everest Forms form field. The payload survives sanitize_text_field() sanitization (serialization control characters are not stripped) and is stored in the wp_evf_entrymeta database table. When an administrator views entries or views an individual entry, the unsafe unserialize() call processes the stored data without class restrictions.