CVE-2025-6440
📋 TL;DR
The WooCommerce Designer Pro plugin for WordPress has an unauthenticated arbitrary file upload vulnerability that allows attackers to upload malicious files to the server. This affects all WordPress sites using this plugin up to version 1.9.26, particularly those using the Pricom theme. Successful exploitation could lead to complete server compromise.
💻 Affected Systems
- WooCommerce Designer Pro WordPress Plugin
- Pricom - Printing Company & Design Services WordPress Theme
⚠️ 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
Remote code execution leading to full server compromise, data theft, website defacement, and installation of persistent backdoors.
Likely Case
Attackers upload web shells to gain administrative access, deface websites, or install malware for further attacks.
If Mitigated
File uploads blocked, but attackers may still attempt exploitation attempts visible in logs.
🎯 Exploit Status
Simple HTTP POST request with malicious file payload to the vulnerable AJAX endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.9.27 or later
Vendor Advisory: https://codecanyon.net/item/woocommerce-designer-pro-cmyk-card-flyer/22027731
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find WooCommerce Designer Pro. 4. Click 'Update Now' if update available. 5. If no update, deactivate and remove plugin immediately.
🔧 Temporary Workarounds
Block vulnerable AJAX endpoint
linuxAdd .htaccess rule to block access to the vulnerable wcdp_save_canvas_design_ajax function
# Add to .htaccess in WordPress root directory
RewriteEngine On
RewriteCond %{QUERY_STRING} action=wcdp_save_canvas_design_ajax [NC]
RewriteRule .* - [F,L]
Disable plugin
linuxTemporarily disable WooCommerce Designer Pro plugin until patched
wp plugin deactivate woocommerce-designer-pro
🧯 If You Can't Patch
- Remove the WooCommerce Designer Pro plugin completely from the WordPress installation
- Implement web application firewall (WAF) rules to block file uploads to the vulnerable endpoint
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → WooCommerce Designer Pro version. If version ≤ 1.9.26, you are vulnerable.Check Version:
wp plugin get woocommerce-designer-pro --field=versionVerify Fix Applied:
Verify plugin version is 1.9.27 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with action=wcdp_save_canvas_design_ajax
- File uploads to unusual directories like /wp-content/uploads/ with PHP/executable extensions
Network Indicators:
- Unusual POST requests to WordPress AJAX endpoints with file uploads
- Traffic spikes to /wp-admin/admin-ajax.php
SIEM Query:
source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND method="POST" AND query="action=wcdp_save_canvas_design_ajax"