Stored XSS in Smart School

Stored Cross Site Scripting (XSS) vulnerability in Smart School 7.0 due to lack of proper validation of user input when sending a POST request to '/online_admission', wich affects the parameters 'firstname', 'lastname', 'guardian_name' and others. This vulnerability could allow a remote user to send a specially crafted query to an authenticated user and steal his/her session cookie details.