CVE-2025-63611
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in phpgurukul Hostel Management System v2.1 allows attackers to inject malicious scripts into complaint fields. When administrators view these complaints, the scripts execute in their browser context, potentially compromising admin accounts. All installations using the vulnerable version are affected.
💻 Affected Systems
- phpgurukul Hostel Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, perform actions as administrators (including adding malicious users, modifying data), or redirect to phishing sites.
Likely Case
Session hijacking leading to unauthorized administrative access and potential data manipulation within the hostel management system.
If Mitigated
Limited impact if administrators use separate accounts for system administration and regular browsing, with proper session management.
🎯 Exploit Status
Exploitation requires user-level access to submit complaints, but the attack is simple once that access is obtained. Public proof-of-concept demonstrates the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://phpgurukul.com/hostel-management-system/
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates. Consider implementing input validation and output encoding as workaround.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side validation to sanitize user input in complaint fields and properly escape output when rendering in admin interface.
Modify /register-complaint.php to sanitize inputs using htmlspecialchars() or similar functions
Modify /admin/complaint-details.php to escape output using htmlentities() when displaying complaint content
Content Security Policy
allImplement Content Security Policy headers to restrict script execution from untrusted sources.
Add header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Disable complaint submission functionality if not essential
- Implement web application firewall (WAF) rules to block XSS payloads in complaint fields
🔍 How to Verify
Check if Vulnerable:
Submit a complaint with payload: <script>alert('XSS')</script> and check if script executes when admin views complaint.Check Version:
Check system version in admin panel or review source code files for version markersVerify Fix Applied:
Test with same payload after implementing fixes - script should not execute and should be displayed as plain text.📡 Detection & Monitoring
Log Indicators:
- Unusually long complaint submissions
- Complaints containing script tags or JavaScript code
- Multiple complaint submissions from same user in short time
Network Indicators:
- HTTP POST requests to /register-complaint.php with script content
- Admin panel requests followed by suspicious outbound connections
SIEM Query:
source="web_logs" AND (uri="/register-complaint.php" AND (body CONTAINS "<script>" OR body CONTAINS "javascript:"))