CVE-2025-30985
📋 TL;DR
A PHP object injection vulnerability in GNUCommerce WordPress plugin allows attackers to execute arbitrary code through deserialization of untrusted data. This affects all WordPress sites running GNUCommerce plugin versions up to 1.5.4. Attackers can exploit this to gain complete control of affected websites.
💻 Affected Systems
- GNUCommerce 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
Remote code execution leading to complete system compromise, data theft, website defacement, and backdoor installation.
Likely Case
Remote code execution allowing attackers to create administrator accounts, steal sensitive data, or deploy malware.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though deserialization vulnerabilities remain dangerous.
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited and weaponized quickly due to available exploit chains.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.5 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find GNUCommerce plugin
4. Click 'Update Now' if available
5. If no update available, download version 1.5.5+ from WordPress.org
6. Deactivate old version, upload new version, activate
🔧 Temporary Workarounds
Disable GNUCommerce Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate gnucommerce
Restrict PHP Deserialization
linuxAdd PHP configuration to restrict dangerous deserialization functions
php_admin_value disable_functions "unserialize"
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block deserialization attempts
- Restrict access to affected WordPress instances using network segmentation and authentication
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for GNUCommerce versionCheck Version:
wp plugin get gnucommerce --field=versionVerify Fix Applied:
Verify GNUCommerce plugin version is 1.5.5 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress endpoints
- PHP unserialize() errors in logs
- Unexpected file creation in wp-content/uploads
Network Indicators:
- HTTP requests containing serialized PHP objects
- Unusual outbound connections from WordPress server
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "GNUCommerce" OR "php_object")