Client Management System version 1.1 suffers from a persistent cross site scripting vulnerability.
2f83c7f0a1aba3af2fad9aae911255b4# Exploit Title: Client Management System 1.1 - 'username' Stored Cross-Site Scripting (XSS)
# Date: 14 June 2021
# Exploit Author: BHAVESH KAUL
# Vendor Homepage: https://phpgurukul.com
# Software Link: https://phpgurukul.com/client-management-system-using-php-mysql/
# Version: 1.1
# Tested on: Server: XAMPP
# Description #
Client Management System 1.1 is vulnerable to stored cross site scripting because of insufficient user supplied data sanitization.
# Proof of Concept (PoC) : Exploit #
1) Goto: http://localhost/clientms/admin/index.php
2) Login as admin using test credentials: admin/Test@123
3) Goto: http://localhost/clientms/admin/admin-profile.php
4) Enter the following payload in the user name field: <script>alert(1)</script>
5) Click on Update
6) Our payload is fired and stored