In OAuth, what security considerations must be taken into account when implementing implicit grant flow?

  • Allow any redirect URI to support flexibility.
  • Do not validate the redirect URI, as it's handled by the implicit grant flow.
  • Use a fixed redirect URI to simplify the implementation.
  • Validate the redirect URI to prevent open redirect attacks.
Validating the redirect URI is crucial to prevent open redirect attacks, ensuring that the authorization response is sent to a legitimate endpoint. This helps in protecting against malicious redirections.
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