CVE-2025-13576
📋 TL;DR
CVE-2025-13576 is an improper authorization vulnerability in code-projects Blog Site 1.0 that allows remote attackers to bypass authentication on the /admin.php endpoint. This affects all deployments of Blog Site 1.0, enabling unauthorized access to administrative functions. The vulnerability is remotely exploitable and public exploit details are available.
💻 Affected Systems
- code-projects Blog Site
📦 What is this software?
Blog Site by Fabian
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the blog site with administrative privileges, allowing content manipulation, user data exposure, and potential server takeover if combined with other vulnerabilities.
Likely Case
Unauthorized access to administrative dashboard leading to content modification, user management, and potential data leakage.
If Mitigated
Limited impact with proper network segmentation and monitoring, though authentication bypass remains possible.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily weaponizable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
No official patch available. Consider migrating to alternative blog software or implementing workarounds.
🔧 Temporary Workarounds
Restrict admin.php access
allBlock access to /admin.php endpoint using web server configuration or firewall rules
# Apache: RewriteRule ^admin\.php$ - [F,L]
# Nginx: location ~ ^/admin\.php$ { deny all; }
Implement IP whitelisting
allRestrict admin.php access to specific trusted IP addresses only
# Apache: Require ip 192.168.1.0/24
# Nginx: allow 192.168.1.0/24; deny all;
🧯 If You Can't Patch
- Implement network segmentation to isolate the blog server from critical systems
- Enable detailed logging and monitoring for unauthorized access attempts to /admin.php
🔍 How to Verify
Check if Vulnerable:
Attempt to access /admin.php without authentication. If access is granted or authentication is bypassed, the system is vulnerable.Check Version:
Check the software version in the footer or about page, or examine the source code for version identifiers.Verify Fix Applied:
Test that /admin.php requires proper authentication and cannot be accessed without valid credentials.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /admin.php
- Successful admin.php access without authentication logs
- Unusual admin panel activity from unexpected IPs
Network Indicators:
- HTTP requests to /admin.php without preceding login requests
- Admin.php access from non-whitelisted IP addresses
SIEM Query:
source="web_logs" AND (uri="/admin.php" AND NOT (user_agent="bot" OR ip IN [whitelist]))