Invoice System 1.0 - 'Multiple' Stored Cross-Site Scripting (XSS)

Exploit Title: Invoice System 1.0 - 'Multiple' Stored Cross-Site Scripting XSS Date: 12 July 2021 Exploit Author: Subhadip Nag mrl0s3r Vendor Homepage: https://www.sourcecodester.com/ Software Link: https://www.sourcecodester.com/php/14858/invoice-system-using-phpoop-free-source-code.html Tested...