CVE-2025-69971
📋 TL;DR
FUXA v1.2.7 contains a hard-coded JWT secret key that allows attackers to forge valid authentication tokens. This enables complete authentication bypass and administrative access to affected systems. Any organization running vulnerable FUXA versions is at risk.
💻 Affected Systems
- FUXA
📦 What is this software?
Fuxa by Frangoteam
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with administrative privileges, allowing data theft, system manipulation, and potential lateral movement.
Likely Case
Unauthorized administrative access leading to configuration changes, data access, and potential privilege escalation.
If Mitigated
Limited impact if proper network segmentation and monitoring detect unauthorized authentication attempts.
🎯 Exploit Status
Attack requires knowledge of the hard-coded secret, which is publicly visible in source code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check for updated FUXA version from official sources
2. Replace hard-coded JWT secret with secure random value
3. Restart FUXA service
🔧 Temporary Workarounds
Replace JWT Secret
linuxManually replace the hard-coded JWT secret in jwt-helper.js with a secure random value
sed -i "s/\"hardcoded-secret-key\"/\"$(openssl rand -hex 32)\"/g" /path/to/FUXA/server/api/jwt-helper.js
🧯 If You Can't Patch
- Implement strict network access controls to limit FUXA exposure
- Deploy WAF rules to detect and block JWT manipulation attempts
🔍 How to Verify
Check if Vulnerable:
Inspect server/api/jwt-helper.js for hard-coded secret valueCheck Version:
Check FUXA version in package.json or documentationVerify Fix Applied:
Verify jwt-helper.js contains a non-default, random JWT secret📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful admin login
- Authentication from unexpected IP addresses
Network Indicators:
- Unusual JWT token patterns or manipulation attempts
SIEM Query:
source="fuxa" AND (event="authentication" AND result="success" AND user="admin")