CVE-2025-65881
📋 TL;DR
CVE-2025-65881 is a Cross-Site Scripting (XSS) vulnerability in Sourcecodester Zoo Management System v1.0's login component. Attackers can inject malicious scripts into the login page, potentially compromising user sessions. Organizations using this specific version of the software are affected.
💻 Affected Systems
- Sourcecodester Zoo Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator credentials, gain full system control, and potentially pivot to other systems in the network.
Likely Case
Session hijacking of regular users, credential theft, and defacement of the login page.
If Mitigated
Limited impact with proper input validation and output encoding in place.
🎯 Exploit Status
Public proof-of-concept code is available on GitHub, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch exists. Consider implementing workarounds or replacing the software.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allManually sanitize user inputs in /classes/Login.php to prevent script injection.
Edit /classes/Login.php to implement proper input validation and output encoding functions like htmlspecialchars() in PHP.
Web Application Firewall (WAF)
allDeploy a WAF with XSS protection rules to block malicious payloads.
Configure WAF rules to detect and block XSS patterns in login requests.
🧯 If You Can't Patch
- Isolate the Zoo Management System behind a reverse proxy with strict input filtering.
- Implement strong session management and use HTTP-only cookies to limit XSS impact.
🔍 How to Verify
Check if Vulnerable:
Review /classes/Login.php for lack of input sanitization. Test with a harmless XSS payload like <script>alert('test')</script> in login fields.Check Version:
Check the software version in the system's admin panel or configuration files.Verify Fix Applied:
After applying workarounds, test with the same XSS payload to ensure it's properly sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual script tags or JavaScript in login request logs.
- Multiple failed login attempts with suspicious payloads.
Network Indicators:
- HTTP requests to /classes/Login.php containing script tags or encoded JavaScript.
SIEM Query:
source="web_logs" AND uri="/classes/Login.php" AND (payload CONTAINS "<script>" OR payload CONTAINS "javascript:")