Same here, happy to review PRs and provide insights. That would be super
helpful!

On Thu 16 Oct 2025 at 18:43, Vincent Beck <[email protected]> wrote:

> +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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