I will add my American 2 cents to Jeff's summary.

On Mon, Sep 28, 2026 at 7:03 AM Lombardo, Jeff <jeffsec=
[email protected]> wrote:

> Are you, Emelia and Dick [and all who voted], saying the same thing?
>
> "Do people agree there is a problem to be solved" is not a the same of "Do
> people agree there is a problem to be solved *like that*" as Emelia
> pointed.
>
>
>
> My 2 Canadian cents (roughly 0.1 US cent those days) is that:
>
>    - Members of the WG agree there is a problem/smoking gun
>    - Members of the WG disagree on the breaking change introduce as the
>    unitarily option to solve it
>    - Members of the WG agree to more deeply formalize the problem so that
>    additional options to work on could be formalized post adoption
>
>
>
> *Jean-François “Jeff” Lombardo* | Amazon Web Services
>
>
> Principal Standards Specialist, Identity Services
> Montréal, Canada
>
>
>
> *From:* Dick Hardt <[email protected]>
> *Sent:* September 28, 2026 8:48 AM
> *To:* [email protected]
> *Cc:* Sam Goto <[email protected]>
> *Subject:* [EXT] [OAUTH-WG] Re: Is authorization code exfiltration a
> problem the WG wants to solve?
>
>
>
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>
>
> Checking in to see if this problem is something the WG wants to work on.
>
>
>
> On Tue, Sep 22, 2026 at 5:19 PM Dick Hardt <[email protected]> wrote:
>
> Hi Emilia
>
>
>
> The poll text was "Do people agree there is a problem to be solved"
>
> https://datatracker.ietf.org/doc/polls-interim-2026-oauth-05-202609211300/
>
> Slide 4 of the presentation was presented during the poll.
>
>
> The poll was not adoption of the draft by the WG.
>
> /Dick
>
>
>
> On Tue, Sep 22, 2026 at 5:02 PM Emelia S. <[email protected]> wrote:
>
> Hi Dick,
>
>
>
> My interpretation from yesterday was that we were asked "Do we want to
> adopt this specific solution" and the answer was "no, because it's unclear
> if this actually solves the problem or not based on reading the draft text
> alone"
>
>
>
> There's no clear definition of the problem, therefore there can't be a
> solution, yet.
>
>
>
> — Emelia
>
>
>
> On 22 Sep 2026, at 17:05, Dick Hardt <[email protected]> wrote:
>
>
>
> Hey
>
>
>
> At the September 21 interim [1], the chairs asked if there authorization
> code exfiltration is a problem to be solved. 3 said yes, 5 said no.
>
>
>
> The authorization code is a credential that we deliver in the redirect
> URL. From there it can be exfiltrated through history, logs, Referer, page
> JavaScript and extensions. Based on the Browser-Swapping thread [2] and the
> support for Redirect Headers in December [3], I had thought there was
> consensus that this is a problem.
>
>
>
> Do you think exfiltration of the authorization code is a problem this WG
> should solve?
>
>
>
> /Dick
>
>
>
> [1]
> https://datatracker.ietf.org/meeting/interim-2026-oauth-05/session/oauth
>
> [2]
> https://mailarchive.ietf.org/arch/msg/oauth/K8Wnw08GzPstyAQAh0JmSB47pOQ/
>
> [3]
> https://mailarchive.ietf.org/arch/msg/oauth/FFkUlOiz7I4K03pqjMfIFkxAwA8/
>
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