I suspect it was an unintentional oversight in the Security BCP and that it
should be updated to allow for it.

On Mon, May 11, 2020 at 10:03 AM Aaron Parecki <[email protected]> wrote:

> The Security BCP has pretty clear language around requiring exact matching
> of redirect URIs now.
>
>
> https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15#section-2...1
> <https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15#section-2.1>
>
> However the Native Apps BCP has an exception for localhost URIs to allow
> variable ports.
>
> https://tools.ietf.org/html/rfc8252#section-7.3
>
> Is the intention of the Security BCP to also prevent that use case?
>
> If so, it should probably be spelled out explicitly, since there is
> currently no mention of this. If not, then that exception should also be
> repeated in the Security BCP, since it is currently somewhat ambiguous
> whether the exception in the Native Apps BCP is still allowed.
>
> Aaron Parecki
>
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> [email protected]
> https://www.ietf.org/mailman/listinfo/oauth
>

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