Fix Security Issues in Java Spring Boot Application

Hello, I need someone who can fix following (but not limited to) security issues in Java Spring Boot Application:
Application security testing of URL: http://pmrda.gov.in/login showed that they are vulnerable to the
following threats:
1. An adversary can steal sensitive application data by sniffing clear text traffic.
2. An adversary can perform a HTML injection attack on the application
3. Information exposure through query strings in url
4. Improper Access Control – Disclosure of Sensitive Data via IDOR
5. A local adversary can steal password from the Autocomplete feature of the browser
However, we have also observed the following strength:
6. The applications are safe against CSRF attacks