+1 on this one. If someone is interested, that would be super helpful. Very 
happy to help and reviews PRs, you will not be alone :)

On 2025/10/16 16:11:37 Jarek Potiuk wrote:
> While I am working on updating Connexion to 2.15.0 in Airflow 2 + FAB 1.5,
> I have another thing: We still use Connexion in FAB 2 provider (for airflow
> 3) to handle the (very few) API endpoints FAB.  Ideally we should get rid
> of Connexion completely - this will make some of our dependencies "free" to
> upgrade as well.
> 
> We discussed it with Vincent and Pierre and I would love someone involved
> in Fast API development who has some experience in this part could take it
> on and help.
> 
> That would be a really invaluable help. I created an issue for that
> https://github.com/apache/airflow/issues/56730 - and we have a #fab-upgrade
> slack channel to discuss details. If one of the community members could
> help with that - please let us know and we will be happy to collaborate as
> well.
> 
> J,
> 
> 
> On Sun, Jun 22, 2025 at 8:55 AM Jarek Potiuk <[email protected]> wrote:
> 
> > Good news. As a result of our request, Connection 2.15.0rc2 was released
> > in PyPI this morning with Flask>3. I am running now tests with it
> > https://github.com/apache/airflow/pull/51681 and we **finally** have
> > non-conflicting dependencies in Airflow 2.11 with it.
> >
> > It still fails - i.e. we will have to fix things with session handling (we
> > knew we will have to do it because of flask-session upgrade) but this is
> > something we are now unblocked with :).
> >
> >  Hopefully soon we will get rid of the Werkzeug drama.
> >
> > root@a20ed58d4f59:/opt/airflow# pip freeze | grep lask
> > Flask==2.3.3
> > Flask-AppBuilder==4.5.2
> > Flask-Babel==2.0.0
> > Flask-Bcrypt==1.0.1
> > Flask-Caching==2.3.1
> > Flask-JWT-Extended==4.7.1
> > Flask-Limiter==3.11.0
> > Flask-Login==0.6.3
> > Flask-Session==0.8.0
> > Flask-SQLAlchemy==2.5.1
> > Flask-WTF==1.2.2
> > root@a20ed58d4f59:/opt/airflow# pip freeze | grep erkzeug
> > *Werkzeug==3.1.3*
> > root@a20ed58d4f59:/opt/airflow#
> >
> > J.
> >
> >
> >
> >
> > On Thu, Jun 19, 2025 at 7:44 AM Jarek Potiuk <[email protected]> wrote:
> >
> >> Dear Airflow community,
> >>
> >> Thank you. You are amazing. With all the upvotes and comments we had the
> >> contributor of connexion working on bringing Flask 2.3.3+ back to the
> >> upcoming Connexion release
> >> https://github.com/spec-first/connexion/pull/2058/
> >>
> >> Particularly Kamil - thanks for the thoughtful comments and the
> >> diligent check on what Flask version we need. We are currently at 2.2 in
> >> Airflow 2.11 but I checked that if Connexion sets their limit to >=2.3.3,
> >> we should be able update to that version in 2.11 (and it's good in general
> >> as 2.3+ is now the only recommended branch still being "supported" for
> >> Flask 2 for security issues it seems. So we get additional benefit there
> >> that we will be less likely to hit similar issues until Airflow 2 EOL.
> >>
> >> J.
> >>
> >>
> >> On Wed, Jun 18, 2025 at 8:07 PM Jarek Potiuk <[email protected]> wrote:
> >>
> >>> Thank you Kamil - that's very thoughtful and nice to see your message
> >>> back on the devlist :D
> >>>
> >>> On Wed, Jun 18, 2025 at 7:38 PM Kamil Breguła <[email protected]>
> >>> wrote:
> >>>
> >>>> I proposed to split the new connexion release into two versions. First
> >>>> release one release that supports the new Werkzereg release, and then
> >>>> release a new Connexion release that supports Flask 3 only. This is not
> >>>> ideal, because Airflow 2 will still be on an unsupported version of
> >>>> Connexion, but we will have at least one release that has the new
> >>>> Werkzeug
> >>>> version and has a fix for the CVE bug. This might be easier to do, as I
> >>>> understand that connexion might not want to support Flask 2 if there is
> >>>> no
> >>>> specific end date for when other dependencies will support Flask 3, but
> >>>> it
> >>>> may still turn out to be enough for us.
> >>>>
> >>>> śr., 18 cze 2025 o 08:54 Jarek Potiuk <[email protected]> napisał(a):
> >>>>
> >>>> > I WOULD LIKE TO TAP INTO POWER OF OUR COMMUNITY... PLEASE HELP.
> >>>> >
> >>>> > We again had another issue with FAB where the root cause was our old
> >>>> > Werkzeug version - that we cannot upgrade until now) - old Werkzeug
> >>>> does
> >>>> > not support `scrypt` hashing algorithm and latest FAB version
> >>>> defaulted
> >>>> > password hashing to scrypt - we have a workaround but we will have to
> >>>> make
> >>>> > a more complete fix with FAB provider. And I am sure Airflow 2 users
> >>>> will
> >>>> > have more and more problems as the time passes.
> >>>> >
> >>>> > I think there is a **real** chance with the Connexion team working on
> >>>> > 2.15.0 - https://pypi.org/project/connexion/2.15.0rc1/  that we can
> >>>> > finally
> >>>> > get rid of it - in Both Airflow 2 and Airflow 3. But we have one
> >>>> problem ->
> >>>> > Connexion 2.15.0rc1 seems to require Flask 3 where we cannot upgrade
> >>>> to
> >>>> > Flask 3 because of the FAB <3 limit. I started a discussion about it
> >>>> here:
> >>>> >
> >>>> https://github.com/spec-first/connexion/pull/1992#issuecomment-2976706491
> >>>> > and explained that it would be great if Connexion 2.15.0 supported
> >>>> still
> >>>> > flask 2.
> >>>> >
> >>>> > And it would be great if more people could support it and explain
> >>>> that this
> >>>> > would be a major win for the Airflow community if they could relax
> >>>> this.
> >>>> >
> >>>> > I do not think this is a big problem for them - the explanation we
> >>>> had from
> >>>> > them is "hey Flask 2 is really old" - but there is no "real" reason.
> >>>> > On the other hand migrating FAB to Flask 3 would like be a very
> >>>> complex and
> >>>> > risky thing (and Daniel already struggles with just SQLalchemy
> >>>> upgrade and
> >>>> > FAB 5 so it would be too much to put the pressure on him).
> >>>> >
> >>>> > Can you please help and upvote/comment on
> >>>> >
> >>>> https://github.com/spec-first/connexion/pull/1992#issuecomment-2976706491
> >>>> >
> >>>> > I would (and the whole community) really, really appreciate it.
> >>>> >
> >>>> > J.
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>> > On Fri, Jun 13, 2025 at 11:16 AM Jarek Potiuk <[email protected]>
> >>>> wrote:
> >>>> >
> >>>> > > Hello everyone,
> >>>> > >
> >>>> > > As you might know, Airflow 2 has a long-time issue with not being
> >>>> able to
> >>>> > > upgrade Werkzeug dependency to a non-vulnerable version and that
> >>>> raises a
> >>>> > > lot of alarms for users who run CVE checks on Airflow.
> >>>> > >
> >>>> > > We've been waiting for a long time for that - but it looks like
> >>>> there is
> >>>> > a
> >>>> > > light in a tunnel. We have two options that we can attempt:
> >>>> > >
> >>>> > > 1) Connexion 2.15.0.rc1
> >>>> > > 2) Releasing a package that will patch Werkzeug 2.2.3 with
> >>>> backported CVE
> >>>> > > fixes
> >>>> > >
> >>>> > > Recently Google team attempted to back-port and test fixes to older
> >>>> > > version of Werkzeug and I helped to get through to the maintainers -
> >>>> > > https://github.com/pallets/werkzeug/discussions/3034 - however
> >>>> they are
> >>>> > > not really willing to make that into regular release - reasoning
> >>>> > explained
> >>>> > > in the discussion.
> >>>> > >
> >>>> > > However, after many months of discussions and at least 3 attempts
> >>>> to bump
> >>>> > > dependencies for Connexion - we seem to have an RC candidate
> >>>> (2.15.0rc1
> >>>> > > https://pypi.org/project/connexion/2.15.0rc1/) that lifts the
> >>>> limit for
> >>>> > > Werkzeug (released 4 days ago).
> >>>> > >
> >>>> > > There were some breaking changes in Werkzeug that made it so long
> >>>> and
> >>>> > > difficult but I think we should be able to release a 2.11.1 version
> >>>> of
> >>>> > > Airflow with it
> >>>> > >
> >>>> > > I made  first attempt to migrate - here:
> >>>> > > https://github.com/apache/airflow/pull/51681 and while I was able
> >>>> to
> >>>> > work
> >>>> > > out non-conflicting dependencies and bump Werkzeug, there are some
> >>>> things
> >>>> > > to be fixed with session handling and there is still one outstanding
> >>>> > > problem - FAB requires Flask < 3 and currently Connexion 2.0.15rc1
> >>>> > requires
> >>>> > > flask >= 3 - which FAB (even upcoming FAB 5) does not support. And
> >>>> likely
> >>>> > > migrating to Flask 3 is **not** an option for us anyway.
> >>>> > >
> >>>> > > I started discussion here with those who worked on the Connexion
> >>>> patch
> >>>> > for
> >>>> > > Werkzeug to see if that is a "hard" limit..:
> >>>> > >
> >>>> >
> >>>> https://github.com/spec-first/connexion/pull/1992#issuecomment-2969565640
> >>>> > >
> >>>> > > Alternative option - patch package:
> >>>> > >
> >>>> > > We also have a "last-resort" approach that we are looking at with
> >>>> the
> >>>> > > Google team. We might want to release a "werkzeug-patch" package
> >>>> that
> >>>> > will
> >>>> > > apply the CVE patches to Werkzeug 2.2.3
> >>>> > >
> >>>> > > Option 1) is not clear yet if it is possible due to Flask 3 / Flask
> >>>> 2  -
> >>>> > > and it would only work for 2.11.1 - we need to make some fixes and
> >>>> change
> >>>> > > dependencies for Airflow to make it work.
> >>>> > >
> >>>> > > Option 2) Is hacky (I am talking to Werkzeug maintainers what do
> >>>> they
> >>>> > > think about it as we would likely need to have at least a comment
> >>>> in the
> >>>> > > CVE advisory that this package fixes it as well) . But it has the
> >>>> benefit
> >>>> > > that it will **just work** by installing the patch on basically all
> >>>> past
> >>>> > > Airflow versions
> >>>> > >
> >>>> > > Just wanted to let everyone know it happens and ask if you have any
> >>>> > > opinions on those.
> >>>> > >
> >>>> > > J.
> >>>> > >
> >>>> >
> >>>>
> >>>
> 

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