CVE-2025-4939
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into the PHPGurukul Credit Card Application Management System 1.0 via the /admin/new-ccapplication.php file. When exploited, it enables cross-site scripting attacks that can steal session cookies, redirect users, or deface the application. Organizations using this specific software version are affected.
💻 Affected Systems
- PHPGurukul Credit Card Application Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full administrative access to the system, and potentially compromise sensitive credit card application data.
Likely Case
Attackers inject malicious scripts that steal user session cookies, leading to unauthorized access to user accounts and potential data theft.
If Mitigated
With proper input validation and output encoding, the vulnerability is prevented, maintaining normal system functionality.
🎯 Exploit Status
Exploit details are publicly available on GitHub. Attack requires access to the admin interface but no authentication bypass.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement proper input validation and output encoding in the new-ccapplication.php file to prevent XSS payloads from executing.
Edit /admin/new-ccapplication.php to add htmlspecialchars() or similar encoding functions around user inputs
Content Security Policy
allImplement a strict Content Security Policy header to prevent execution of inline scripts.
Add header("Content-Security-Policy: default-src 'self'") to PHP files
🧯 If You Can't Patch
- Restrict access to the /admin/ directory to trusted IP addresses only
- Implement web application firewall rules to block XSS payload patterns
🔍 How to Verify
Check if Vulnerable:
Test by submitting a simple XSS payload like <script>alert('test')</script> through the new credit card application form and check if it executes.Check Version:
Check the software version in the application's admin panel or configuration files.Verify Fix Applied:
After implementing fixes, test with the same XSS payload to ensure it's properly sanitized and doesn't execute.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /admin/new-ccapplication.php containing script tags or JavaScript code
- Multiple failed login attempts followed by successful admin access
Network Indicators:
- HTTP requests containing suspicious script tags or encoded JavaScript in form parameters
SIEM Query:
source="web_logs" AND uri="/admin/new-ccapplication.php" AND (body CONTAINS "<script>" OR body CONTAINS "javascript:")🔗 References
- https://github.com/GIRISH05/credit-card-application-management-system-using-php-and-mysql/blob/main/Stored%20Cross-Site%20Scripting%20(XSS).md
- https://phpgurukul.com/
- https://vuldb.com/?ctiid.309502
- https://vuldb.com/?id.309502
- https://vuldb.com/?submit.580119
- https://github.com/GIRISH05/credit-card-application-management-system-using-php-and-mysql/blob/main/Stored%20Cross-Site%20Scripting%20(XSS).md
