Fetch-url-http-3a-2f-2fmetadata.google.internal-2fcomputemetadata-2fv1-2finstance-2fservice Accounts-2f [best]

This server provides three categories of information:

The URL metadata.google.internal is a special internal DNS name accessible only from within a GCP Compute Engine instance. It is not reachable from the public internet. When a developer needs a script to perform an action (like uploading a file to a bucket), the script queries this local URL to get an OAuth 2.0 access token. This eliminates the need to hardcode sensitive credentials directly into the application code. 2. The Vulnerability: Server-Side Request Forgery (SSRF) This server provides three categories of information: The

Let’s build a small application that runs on a GCE VM, fetches the list of service accounts, then uses the default account to list all buckets in the project. fetches the list of service accounts