CVE-2025-9296
📋 TL;DR
Emlog Pro up to version 2.5.18 contains an unrestricted file upload vulnerability in the avatar update function. Attackers can remotely upload malicious files to affected systems, potentially leading to server compromise. This affects all Emlog Pro installations using vulnerable versions.
💻 Affected Systems
- Emlog Pro
📦 What is this software?
Emlog by Emlog
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Webshell upload enabling persistent access, data exfiltration, or lateral movement
If Mitigated
File upload blocked or contained with no impact
🎯 Exploit Status
Exploit requires authentication to access /admin/blogger.php?action=update_avatar endpoint
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to any version above 2.5.18 if released, or apply workarounds.
🔧 Temporary Workarounds
Restrict file upload types
allImplement server-side validation to only allow specific image file types (jpg, png, gif) and check file signatures
Disable vulnerable endpoint
allTemporarily disable or restrict access to /admin/blogger.php?action=update_avatar
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads
- Restrict admin panel access to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Check if Emlog Pro version is 2.5.18 or earlier and if /admin/blogger.php?action=update_avatar endpoint existsCheck Version:
Check Emlog Pro configuration files or admin panel for version informationVerify Fix Applied:
Test file upload functionality with non-image files to ensure proper validation📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to blogger.php
- Multiple failed upload attempts
- Uploads of non-image file types
Network Indicators:
- POST requests to /admin/blogger.php?action=update_avatar with file uploads
- Unusual outbound connections after upload
SIEM Query:
web.url:*blogger.php* AND web.method:POST AND web.post_data:*image*