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]<mailto:[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]<mailto:[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]<mailto:[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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