CVE-2026-24892
📋 TL;DR
openITCOCKPIT Community Edition 5.3.1 and earlier contains an unsafe PHP deserialization vulnerability in changelog processing. While no current exploit path exists, the unrestricted unserialize() call creates a latent PHP object injection vulnerability that could become exploitable through future code changes, plugins, or refactors. This affects all users running vulnerable versions of openITCOCKPIT Community Edition.
💻 Affected Systems
- openITCOCKPIT Community Edition
📦 What is this software?
Openitcockpit by It Novum
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if object injection becomes possible through future code changes
Likely Case
Currently no direct exploitation path exists, but the vulnerability remains latent and could become exploitable with any future modifications to the affected code path
If Mitigated
No impact if proper input validation and class restrictions are implemented during deserialization
🎯 Exploit Status
No current exploitation path exists, but the vulnerability is latent and could become exploitable with future code changes
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: openITCOCKPIT-5.4.0
Vendor Advisory: https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-g83p-vvjm-g39x
Restart Required: Yes
Instructions:
1. Backup your current installation and database. 2. Download openITCOCKPIT-5.4.0 from the official releases. 3. Follow the upgrade instructions in the documentation. 4. Restart the web server and any related services.
🔧 Temporary Workarounds
Input validation wrapper
allImplement custom validation to sanitize changelog data before deserialization
# Requires code modification - implement proper input validation in changelog processing
🧯 If You Can't Patch
- Implement strict network segmentation to isolate openITCOCKPIT instances
- Monitor for unusual activity in changelog processing and PHP execution logs
🔍 How to Verify
Check if Vulnerable:
Check the openITCOCKPIT version in the web interface or by examining the installation directoryCheck Version:
grep -r 'APP_VERSION' /path/to/openitcockpit/config/ || check web interfaceVerify Fix Applied:
Verify version is 5.4.0 or later and check that the unsafe unserialize() call has been replaced with proper validation📡 Detection & Monitoring
Log Indicators:
- Unusual PHP deserialization errors
- Unexpected changelog entries with serialized data
- PHP object instantiation in changelog context
Network Indicators:
- Unusual POST requests to changelog endpoints
- Serialized data in HTTP requests
SIEM Query:
source="openitcockpit_logs" AND ("unserialize" OR "changelog" AND "serialized")