CVE-2025-2266
📋 TL;DR
This vulnerability allows unauthenticated attackers to modify WordPress site options via the Checkout Mestres do WP for WooCommerce plugin. Attackers can change the default user registration role to administrator and enable user registration, gaining full administrative access. WordPress sites using vulnerable plugin versions 8.6.5 to 8.7.5 are affected.
💻 Affected Systems
- Checkout Mestres do WP for WooCommerce WordPress plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete site takeover where attackers gain administrative access, install backdoors, steal data, deface the site, or use it for further attacks.
Likely Case
Attackers create administrator accounts and gain full control over the WordPress site, potentially compromising sensitive data and site functionality.
If Mitigated
If proper access controls and monitoring are in place, unauthorized changes can be detected and reverted before significant damage occurs.
🎯 Exploit Status
The vulnerability is straightforward to exploit with simple HTTP requests to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.7.6
Vendor Advisory: https://wordpress.org/plugins/checkout-mestres-wp/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Checkout Mestres do WP for WooCommerce'. 4. Click 'Update Now' if available, or manually update to version 8.7.6 or later.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the plugin until patched
wp plugin deactivate checkout-mestres-wp
Restrict access to admin-ajax.php
linuxBlock unauthenticated access to the vulnerable endpoint via web application firewall or .htaccess
# Add to .htaccess: RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$ [NC] RewriteCond %{HTTP_COOKIE} !wordpress_logged_in [NC] RewriteRule .* - [F,L]
🧯 If You Can't Patch
- Disable user registration in WordPress settings
- Implement web application firewall with rules blocking suspicious admin-ajax.php requests
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Checkout Mestres do WP for WooCommerce version. If between 8.6.5 and 8.7.5 inclusive, vulnerable.Check Version:
wp plugin get checkout-mestres-wp --field=versionVerify Fix Applied:
Verify plugin version is 8.7.6 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with action=cwmpUpdateOptions from unauthenticated IPs
- Sudden creation of new administrator accounts
- Changes to WordPress options like default_role or users_can_register
Network Indicators:
- HTTP POST requests to admin-ajax.php with cwmpUpdateOptions parameter from external IPs without authentication cookies
SIEM Query:
source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND method="POST" AND params.action="cwmpUpdateOptions" AND NOT cookie="wordpress_logged_in"