CVE-2025-66204
📋 TL;DR
WBCE CMS version 1.6.4 has a brute-force protection bypass vulnerability where attackers can modify the X-Forwarded-For header to reset login attempt counters, allowing unlimited password guessing. This affects all WBCE CMS 1.6.4 installations with default configurations. Attackers can exploit this to compromise admin accounts and take over websites.
💻 Affected Systems
- WBCE CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete website takeover through admin account compromise, leading to data theft, defacement, or malware injection.
Likely Case
Administrator account compromise leading to unauthorized content changes and potential data exposure.
If Mitigated
Failed login attempts logged but no account compromise if strong passwords are used.
🎯 Exploit Status
Exploitation requires only HTTP header manipulation, which is trivial with standard tools like curl or Burp Suite.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.5
Vendor Advisory: https://github.com/WBCE/WBCE_CMS/security/advisories/GHSA-f676-f375-m7mw
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download WBCE CMS 1.6.5 from official repository. 3. Replace all files except configuration and upload directories. 4. Run the upgrade script if prompted. 5. Verify functionality.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rule
allBlock or sanitize X-Forwarded-For headers at the WAF or reverse proxy level.
# Example nginx config to strip X-Forwarded-For
proxy_set_header X-Forwarded-For $remote_addr;
# Example Apache mod_headers
RequestHeader unset X-Forwarded-For
Rate Limiting at Network Level
linuxImplement IP-based rate limiting for login endpoints using network appliances or load balancers.
# Example iptables rule for rate limiting
sudo iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m recent --set
sudo iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m recent --update --seconds 60 --hitcount 20 -j DROP
🧯 If You Can't Patch
- Implement strong password policies (16+ characters, complexity requirements) for all accounts.
- Enable multi-factor authentication if available, or implement IP whitelisting for admin access.
🔍 How to Verify
Check if Vulnerable:
Check if running WBCE CMS version 1.6.4 by examining version files or admin panel.Check Version:
grep -r '1.6.4' /path/to/wbce/installation/ || check admin panel → Info → VersionVerify Fix Applied:
Confirm version is 1.6.5 or later, and test that modifying X-Forwarded-For header no longer resets login counters.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from same IP with varying X-Forwarded-For headers
- Unusual number of POST requests to /admin/login/index.php
Network Indicators:
- HTTP requests with manipulated X-Forwarded-For headers
- High volume of requests to login endpoints
SIEM Query:
source="web_logs" AND (url="/admin/login/index.php" OR url="/admin/login") AND status="401" | stats count by src_ip, http_x_forwarded_for