Can someone please show me code examples with explanations for insecure interaction between components such as SQL Injection, Command Line Injection, Cross-Site Scripting, Unrestricted Upload of File with Dangerous Type, Cross-Site Request Forgery (CSRF), and URL Redirection to Untrusted Site ('Open Redirect')? only 2 of these need to be demonstrated not all of them.

So essentially, provide unique code that contains the vulnerability and then provide an updated version of the code that fixes the vulnerability.

Having difficulty putting this together.