CVE-2025-6126

4.3 MEDIUM

📋 TL;DR

This is a cross-site scripting (XSS) vulnerability in PHPGurukul Rail Pass Management System 1.0 that allows attackers to inject malicious scripts via the Name parameter in contact.php. The vulnerability affects web applications using this specific software version and can be exploited remotely by attackers to steal session cookies or perform other malicious actions in users' browsers.

💻 Affected Systems

Products:
  • PHPGurukul Rail Pass Management System
Versions: 1.0
Operating Systems: Any OS running PHP web server
Default Config Vulnerable: ⚠️ Yes
Notes: Affects the contact.php file specifically, but other parameters may also be vulnerable according to the disclosure.

📦 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 the entire rail pass management infrastructure.

🟠

Likely Case

Attackers steal user session cookies, perform unauthorized actions on behalf of users, or deface the website with malicious content.

🟢

If Mitigated

Script execution is prevented by proper input validation and output encoding, limiting impact to minor data exposure.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploit details have been publicly disclosed on GitHub, making this easily exploitable by attackers with basic web security knowledge.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: https://phpgurukul.com/

Restart Required: No

Instructions:

No official patch available. Consider implementing input validation and output encoding workarounds, or migrating to a different system.

🔧 Temporary Workarounds

Input Validation and Sanitization

all

Implement server-side validation to sanitize all user inputs, especially the Name parameter in contact.php

Edit contact.php to add: $name = htmlspecialchars($_POST['Name'], ENT_QUOTES, 'UTF-8');

Content Security Policy

all

Implement CSP headers to restrict script execution from untrusted sources

Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to PHP: header("Content-Security-Policy: default-src 'self'; script-src 'self'");

🧯 If You Can't Patch

  • Implement a Web Application Firewall (WAF) with XSS protection rules
  • Disable or restrict access to contact.php if not essential for operations

🔍 How to Verify

Check if Vulnerable:

Test the contact form by submitting a payload like <script>alert('XSS')</script> in the Name field 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 payload to ensure it's properly sanitized and doesn't execute

📡 Detection & Monitoring

Log Indicators:

  • Unusual script tags or JavaScript in contact form submissions
  • Multiple failed XSS attempts in web server logs

Network Indicators:

  • HTTP requests containing script tags or JavaScript in POST parameters
  • Unusual traffic patterns to contact.php

SIEM Query:

source="web_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=") AND uri="/contact.php"

🔗 References

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