CVE-2025-55948
📋 TL;DR
This vulnerability allows attackers to bypass role-based access controls in yzcheng90 X-SpringBoot 6.0 by exploiting desynchronization between frontend menu systems and backend permission tables. When frontend privilege changes don't immediately update backend permissions, attackers can use direct API calls to perform unauthorized privileged operations. Organizations using X-SpringBoot 6.0 with RBAC enabled are affected.
💻 Affected Systems
- yzcheng90 X-SpringBoot
📦 What is this software?
X Springboot by Yzcheng90
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through creation of administrative accounts, exfiltration of all sensitive data, and execution of arbitrary commands with highest privileges.
Likely Case
Unauthorized access to sensitive data and functions beyond user's clearance level, potentially leading to data breaches and privilege escalation.
If Mitigated
Limited impact with proper network segmentation and API gateway controls, though authentication bypass remains possible.
🎯 Exploit Status
Exploitation requires valid user credentials but minimal technical skill - attackers can use tools like Postman or curl to directly call privileged APIs after privilege revocation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Implement atomic synchronization between frontend menu updates and backend permission tables, ensuring immediate propagation of privilege changes.
🔧 Temporary Workarounds
Implement API Gateway Validation
allAdd an API gateway layer that validates permissions independently of the backend permission table
Force Permission Revalidation
allImplement middleware that forces permission revalidation on every API request rather than caching
🧯 If You Can't Patch
- Implement network segmentation to restrict API access to trusted IP ranges only
- Deploy Web Application Firewall (WAF) rules to detect and block suspicious privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
1. Revoke a user's privilege through frontend interface. 2. Wait 5 minutes. 3. Use the same user's credentials to directly call privileged APIs via Postman/curl. 4. If API calls succeed, system is vulnerable.Check Version:
Check application.properties or pom.xml for X-SpringBoot version 6.0 referencesVerify Fix Applied:
Repeat the vulnerability check - privileged API calls should be immediately rejected after frontend privilege revocation.📡 Detection & Monitoring
Log Indicators:
- API requests succeeding after privilege revocation logs
- Multiple failed permission checks followed by successful privileged operations from same user
Network Indicators:
- Direct API calls to privileged endpoints from users with recently revoked permissions
- Unusual API access patterns bypassing normal UI flows
SIEM Query:
source="application.logs" AND ("permission denied" AND "success" within 10 minutes) AND user=*