This lab contains an access control vulnerability where sensitive information is leaked in the body of a redirect response.
To solve the lab, obtain the API key for the user carlos and submit it as the solution.
You can access you own account using wiener:peter.
Log in using the supplied credentials and access "My Account".
Send the request to Burp Repeater.
Change the "id" parameter to carlos.
Observe that although the response is now redirecting you to the homepage, it has a body containing the API key belonging to carlos.
Submit the API key.