CVE-2025-39391
📋 TL;DR
This vulnerability allows attackers to include local files on the server through improper filename control in PHP include/require statements. It affects WordPress sites running the Checkout Field Visibility for WooCommerce plugin version 1.2.3 and earlier. Attackers can potentially read sensitive files or execute code depending on server configuration.
💻 Affected Systems
- Checkout Field Visibility for WooCommerce
⚠️ 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 complete server compromise, data theft, and website defacement
Likely Case
Local file inclusion allowing reading of sensitive files like configuration files, logs, or database credentials
If Mitigated
Limited file access restricted by PHP security settings or web server permissions
🎯 Exploit Status
Exploitation is straightforward with publicly available proof-of-concept. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Go to Plugins → Installed Plugins
3. Find 'Checkout Field Visibility for WooCommerce'
4. Click 'Update Now' if available
5. If no update available, download version 1.2.4+ from WordPress repository
6. Deactivate old plugin, upload new version, activate
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the plugin until patched
wp plugin deactivate checkout-field-visibility-for-woocommerce
Restrict PHP file functions
linuxConfigure PHP to disable dangerous functions via php.ini
disable_functions = allow_url_fopen,allow_url_include
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block file inclusion patterns
- Restrict file system permissions to minimum required for web server operation
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Checkout Field Visibility for WooCommerce versionCheck Version:
wp plugin get checkout-field-visibility-for-woocommerce --field=versionVerify Fix Applied:
Verify plugin version is 1.2.4 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual file paths in PHP error logs
- Multiple requests with file inclusion patterns in access logs
Network Indicators:
- HTTP requests containing file inclusion parameters like ?file= or ?include=
SIEM Query:
source="web_access_logs" AND (uri="*?file=*" OR uri="*?include=*")