GitHub user dimas-b added a comment to the discussion: Security Concern: Vended 
Credentials — Credential Delegation Violation & Workload Identity Binding

> Is there a pattern where Polaris authorizes the compute engine, but the 
> engine then fetches its own STS token directly using its own workload identity

Certainly. Just configure the Engine to _not_ ask for vended credentials (and 
optionally disable STS in the Polaris catalog).

> Does such a pattern conflict with the current Iceberg REST spec or Polaris’s 
> security model?

I do not think so.

GitHub link: 
https://github.com/apache/polaris/discussions/3972#discussioncomment-16086253

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