Sales and Inventory System for Grocery Store 1.0 - Multiple Stored XSS

# Exploit Title: Sales and Inventory System for Grocery Store 1.0 - Multiple Stored XSS
# Exploit Author: Vijay Sachdeva (pwnshell)
# Date: 2020-12-23
# Vendor Homepage: https://www.sourcecodester.com/php/11238/sales-and-inventory-system-grocery-store.html
# Software Link: https://www.sourcecodester.com/download-code?nid=11238&title=Sales+and+Inventory+System+for+Grocery+Store+using+PHP%2FPDO+Full+Source+Code
# Tested on Kali Linux

Step 1: Log in to the application with admin credentials

Step 2: Click on "Customer" on the left side, then click "Add Customer".

Step 3. Input "<IMG """><SCRIPT>alert("XSS")</SCRIPT>">" in "First Name" field of the "Add Customer" form.

Step 4. Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on the "Customer" page, your XSS payload will be triggered.

Note: Stored XSS can also be found on the "Product" page, select any product and then go to "Action" to edit it. Input your payload "<IMG"""><SCRIPT>alert("XSS")</SCRIPT>">" in any of the field and your XSS payload will trigger.