Hi,

On 06/05/26 10:10 AM, Salvatore Bonaccorso wrote:
> Hi Abhijith,
> 
> On Wed, May 06, 2026 at 12:11:59PM +0530, Abhijith PA wrote:
> > Hello security-team,
> > 
> > I am currently preparing an upload for ruby-rack in bullseye LTS. I've
> > also prepared an update for trixie for ruby-rack[1] except
> > CVE-2026-26962[2]. I will do the same for bookworm too. ruby-rack is
> > listed in data/dsa-needed.txt, but the planned point releases are on
> > 16th May.
> 
> To me it is not clar at all why this should be only 3.2 onwards.
> Looking at the code in trixie, the same is there. What I have not
> tried explicitly is to run the test code. Can you please loop in the
> question to upstream and keep us on the loop for that?

So after some attempt, I was able to contact the committer. According
to them,

 CVE-2026-26962 was introduced due to applying fix for
 CVE-2025-49007[1] (Fix ReDoS and consistency in multipart
 regexes). They mentioned that since it released for 3.2.x , fix was
 required in that series only.

But when I looked, fix was also backported to 3.1.x series as well. I
have asked again for clarity.

So at least bookworm and below versions are not affected.

--abhijith

[1] - 
https://github.com/rack/rack/commit/4795831a0a310c2d31102749e551b38faab6401f

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