Fetch-url-http-3a-2f-2fmetadata.google.internal-2fcomputemetadata-2fv1-2finstance-2fservice Accounts-2f __full__ Jun 2026

The fetch URL in question, http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/ , can be broken down into several components:

If you run curl http://metadata.google.internal from your laptop, it will fail because the DNS name resolves to a local link address only within GCP. The fetch URL in question, http://metadata

The request refers to a specific API call used within Google Cloud Platform (GCP) The fetch URL in question

In URL encoding, characters are replaced by a % followed by their hexadecimal ASCII value. ugly input string.

curl -H "Metadata-Flavor: Google" \ http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/email

The server logs captured the event. Because the logging system was set to record the input parameters exactly as they were received, it didn't store the decoded URL. It stored the raw, ugly input string.