CVE-2025-46078
📋 TL;DR
HuoCMS V3.5.1 and earlier contains an unrestricted file upload vulnerability that allows attackers to upload malicious files to the server. This can lead to remote code execution and complete server compromise. All users running affected versions are vulnerable.
💻 Affected Systems
- HuoCMS
📦 What is this software?
Huocms by Huocms
⚠️ Risk & Real-World Impact
Worst Case
Complete server takeover with administrative privileges, data exfiltration, ransomware deployment, and use as pivot point for lateral movement.
Likely Case
Webshell upload leading to backdoor persistence, data theft, and further exploitation of the server environment.
If Mitigated
File upload attempts blocked or quarantined, with alerts generated for security monitoring.
🎯 Exploit Status
Exploit requires authentication but is trivial to execute once authenticated. Public proof-of-concept code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to latest version if available, or implement workarounds.
🔧 Temporary Workarounds
File Upload Restriction
allImplement strict file upload validation including file type checking, size limits, and content scanning.
Modify upload handler to validate file extensions and MIME types
Implement file size limits in configuration
Web Application Firewall Rules
allDeploy WAF rules to block malicious file upload attempts and suspicious POST requests.
Configure WAF to block requests with suspicious file extensions
Implement rate limiting on upload endpoints
🧯 If You Can't Patch
- Disable file upload functionality entirely if not required
- Implement network segmentation to isolate HuoCMS servers from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check HuoCMS version in admin panel or configuration files. Versions 3.5.1 and earlier are vulnerable.Check Version:
Check /admin/index.php or config files for version informationVerify Fix Applied:
Test file upload functionality with malicious file types to ensure they are rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with suspicious extensions (.php, .jsp, .asp)
- Large POST requests to upload endpoints
- Multiple failed upload attempts
Network Indicators:
- POST requests to upload.php or similar endpoints with executable content
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_logs" AND (uri="*upload*" OR uri="*file*post*") AND (extension=".php" OR extension=".jsp" OR extension=".asp")