CVE-2025-70891
📋 TL;DR
A stored cross-site scripting vulnerability in Phpgurukul Cyber Cafe Management System v1.0 allows authenticated attackers to inject malicious JavaScript via the user management module. The payload executes when privileged users view affected user records, potentially compromising their sessions and system access. This affects all installations of the vulnerable software version.
💻 Affected Systems
- Phpgurukul Cyber Cafe Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Privileged user account takeover leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Session hijacking of admin accounts, unauthorized access to sensitive cafe management data, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and output encoding, potentially only affecting individual user sessions.
🎯 Exploit Status
Exploitation requires authenticated access; public proof-of-concept available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider implementing input validation and output encoding as workaround.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement proper input sanitization for uadd parameter and HTML encode output in view-allusers.php
Edit add-users.php to validate/sanitize uadd input
Edit view-allusers.php to use htmlspecialchars() or similar encoding
🧯 If You Can't Patch
- Restrict access to user management module to trusted administrators only
- Implement web application firewall rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Test by submitting JavaScript payload via uadd parameter in add-users.php and checking if it executes in view-allusers.phpCheck Version:
Check software version in admin panel or configuration filesVerify Fix Applied:
Verify that submitted JavaScript payloads are properly encoded and do not execute in view-allusers.php📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in POST requests to add-users.php
- Multiple user creation attempts with similar patterns
Network Indicators:
- HTTP requests containing script tags or JavaScript functions in uadd parameter
SIEM Query:
source="web_logs" AND (uri="/add-users.php" OR uri="/view-allusers.php") AND (content CONTAINS "<script>" OR content CONTAINS "javascript:")