VAPT points: Any one please help how we can resolve because of following points are open in security

Clear Text password
Stored Cross-Site Scripting (Stored XSS)-
Improper Input Validation-
Vulnerable Outdated Components-
Missing Security Headers-
Improper Error Handling-
Missing Last Login Time and Date-

Hello @amrit and welcome to the community

Kindly elaborate further if you really want someone to help you