CVE-2025-13877
📋 TL;DR
This vulnerability in NocoBase involves the use of a hard-coded cryptographic key in the JWT Service component, allowing attackers to potentially forge authentication tokens. It affects NocoBase installations up to version 1.9.4 and 2.0.0-alpha.37. The vulnerability can be exploited remotely but requires high complexity to execute successfully.
💻 Affected Systems
- NocoBase
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could forge valid JWT tokens to gain unauthorized administrative access, potentially leading to complete system compromise and data exfiltration.
Likely Case
Skilled attackers could bypass authentication mechanisms to access restricted functionality or sensitive data within the application.
If Mitigated
With proper network segmentation and monitoring, impact would be limited to the affected application instance with no lateral movement.
🎯 Exploit Status
Exploit requires understanding of JWT token structure and cryptographic operations. Public exploit details exist but implementation is complex.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Monitor NocoBase GitHub repository for security updates
2. Apply any available patches immediately
3. Restart NocoBase services after patching
🔧 Temporary Workarounds
Replace Hard-coded Key
allManually replace the hard-coded cryptographic key with a securely generated random key
# Edit nocobase/packages/core/auth/src/base/jwt-service.ts
# Replace hard-coded API_KEY value with secure random key
Disable JWT Service
allTemporarily disable JWT authentication if alternative auth methods are available
# Modify NocoBase configuration to use alternative authentication
# Disable JWT service in application settings
🧯 If You Can't Patch
- Implement network segmentation to isolate NocoBase instances from critical systems
- Enable detailed logging of authentication attempts and monitor for suspicious JWT token usage
🔍 How to Verify
Check if Vulnerable:
Check NocoBase version and examine jwt-service.ts file for hard-coded cryptographic keysCheck Version:
Check package.json or application settings for NocoBase versionVerify Fix Applied:
Verify that jwt-service.ts no longer contains hard-coded keys and uses secure key management📡 Detection & Monitoring
Log Indicators:
- Unusual JWT token generation patterns
- Authentication attempts with malformed tokens
- Multiple failed authentication attempts
Network Indicators:
- Unusual API requests to JWT endpoints
- Traffic patterns suggesting token forgery attempts
SIEM Query:
source="nocobase" AND (event="authentication_failure" OR event="jwt_token_generated")