CVE-2024-54282
📋 TL;DR
This vulnerability allows attackers to inject malicious PHP objects through untrusted data deserialization in the WP Mega Menu WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using WP Mega Menu versions up to 1.4.2 are affected.
💻 Affected Systems
- Themeum WP Mega Menu
⚠️ 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 site compromise, data theft, or malware installation.
Likely Case
Arbitrary file upload leading to backdoor installation or privilege escalation.
If Mitigated
Limited impact if proper input validation and security plugins are in place.
🎯 Exploit Status
PHP object injection vulnerabilities are commonly exploited and weaponized quickly.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Mega Menu. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install fresh version 1.4.3+ from WordPress repository.
🔧 Temporary Workarounds
Disable WP Mega Menu Plugin
allTemporarily disable the vulnerable plugin until patched version is available.
wp plugin deactivate wp-megamenu
Web Application Firewall Rule
allBlock requests containing serialized PHP object patterns.
🧯 If You Can't Patch
- Remove WP Mega Menu plugin completely and use alternative menu solution
- Implement strict input validation and sanitization at application layer
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > WP Mega Menu version number.Check Version:
wp plugin get wp-megamenu --field=versionVerify Fix Applied:
Verify plugin version is 1.4.3 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php
- Serialized data patterns in request logs
- Unexpected file uploads or creation
Network Indicators:
- HTTP requests with serialized PHP object patterns
- Unusual outbound connections from web server
SIEM Query:
source="web_logs" AND (uri="*admin-ajax.php*" AND (data="*O:*" OR data="*C:*" OR data="*a:*"))