Webhook-url-http-3a-2f-2f169.254.169.254-2fmetadata-2fidentity-2foauth2-2ftoken //top\\ -

Run a sidecar proxy (e.g., Webhook Relay or Nginx ) that strictly filters outbound destinations. Never let your application logic resolve DNS or IPs directly.

If that request succeeds, the attacker receives an access token. Depending on the Managed Identity attached to your server, that token could grant them: Run a sidecar proxy (e

The heart of your URL is 169.254.169.254 . In cloud computing (Azure, AWS, or Google Cloud), this is the . It is a "link-local" address that only exists inside a virtual server. If you are a server, calling this address is like talking to your own brain to ask, "Who am I, and what secrets do I have access to?" The Story: The Webhook Who Knew Too Much Run a sidecar proxy (e.g.