CVE-2023-51355
📋 TL;DR
This vulnerability allows attackers to bypass authorization controls in MultiVendorX WC Marketplace WordPress plugin, potentially accessing or modifying data they shouldn't have permission to. It affects all WordPress sites using the plugin from any version up to 4.0.23.
💻 Affected Systems
- MultiVendorX WC Marketplace (formerly DC WooCommerce Multi Vendor)
⚠️ 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
Attackers could modify vendor settings, access sensitive vendor data, manipulate marketplace operations, or escalate privileges within the WooCommerce multi-vendor system.
Likely Case
Unauthorized access to vendor dashboards, modification of vendor profiles or products, or viewing of restricted vendor information.
If Mitigated
With proper access controls and network segmentation, impact would be limited to the plugin's functionality without affecting core WordPress or server infrastructure.
🎯 Exploit Status
Requires some level of user access but authorization bypass makes exploitation straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.24 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'MultiVendorX WC Marketplace'. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress.org and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patched
wp plugin deactivate dc-woocommerce-multi-vendor
Access Restriction via .htaccess
linuxRestrict access to plugin admin pages
# Add to .htaccess in WordPress root:
<FilesMatch "^(admin|vendor-dashboard)\.php$">
Order Deny,Allow
Deny from all
</FilesMatch>
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the WordPress admin interface
- Enable detailed logging and monitoring of all vendor dashboard access attempts
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin under Plugins → Installed PluginsCheck Version:
wp plugin get dc-woocommerce-multi-vendor --field=versionVerify Fix Applied:
Verify plugin version is 4.0.24 or higher and test vendor role permissions📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to vendor admin pages
- Unexpected vendor role changes
- Suspicious activity from non-vendor users in vendor areas
Network Indicators:
- Unusual traffic patterns to /wp-admin/admin.php pages with vendor parameters
- Requests bypassing normal authentication flows
SIEM Query:
source="wordpress.log" AND ("vendor-dashboard" OR "admin.php") AND user_role!="vendor" AND action="access"