CVE-2026-2896
📋 TL;DR
This vulnerability allows remote attackers to bypass authorization controls in funadmin's configuration handler, potentially enabling unauthorized configuration changes. It affects funadmin installations up to version 7.1.0-rc4. The exploit is publicly available and can be executed remotely without authentication.
💻 Affected Systems
- funadmin
📦 What is this software?
Funadmin by Funadmin
Funadmin by Funadmin
Funadmin by Funadmin
Funadmin by Funadmin
Funadmin by Funadmin
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through unauthorized configuration changes leading to privilege escalation, data exposure, or remote code execution.
Likely Case
Unauthorized configuration modifications allowing attackers to alter system settings, disable security controls, or gain administrative access.
If Mitigated
Limited impact with proper network segmentation, strong authentication, and configuration monitoring in place.
🎯 Exploit Status
Exploit code is publicly available on GitHub and vuldb, making attacks easy to execute
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to any version beyond 7.1.0-rc4 if released, or implement workarounds.
🔧 Temporary Workarounds
Restrict Access to Ajax.php
allBlock or restrict access to the vulnerable Ajax.php file via web server configuration or firewall rules
# Apache: <LocationMatch "^/app/backend/controller/Ajax\.php"> Require all denied </LocationMatch>
# Nginx: location ~ ^/app/backend/controller/Ajax\.php { deny all; }
Implement Web Application Firewall
allDeploy WAF rules to block requests targeting the setConfig function in Ajax.php
# Example ModSecurity rule: SecRule REQUEST_URI "@rx /app/backend/controller/Ajax\.php.*setConfig" "id:1001,phase:1,deny"
🧯 If You Can't Patch
- Isolate funadmin instances behind network segmentation with strict access controls
- Implement comprehensive logging and monitoring for configuration changes and unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check funadmin version. If version is 7.1.0-rc4 or earlier, system is vulnerable. Also check if Ajax.php setConfig function is accessible without proper authorization.Check Version:
Check funadmin configuration files or admin panel for version informationVerify Fix Applied:
Test if unauthorized requests to /app/backend/controller/Ajax.php with setConfig parameter are properly blocked or require authentication.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /app/backend/controller/Ajax.php with setConfig parameter
- Configuration changes from unexpected IP addresses or users
Network Indicators:
- HTTP requests to Ajax.php endpoint without proper authentication headers
- Unusual traffic patterns to backend controller paths
SIEM Query:
source="web_server" AND (uri="/app/backend/controller/Ajax.php" AND method="POST" AND params CONTAINS "setConfig")