Riccardo Schirone <rschi...@redhat.com> added the comment:

> So far, we at openSUSE had to package at least SQLAlchemy, Twisted, yarl and 
> furl. The author of the first one acknowledged use of semicolon as a bug. I 
> don't think it was so bad.

Did you upstream fixes for those packages?

Asking because if this is considered a vulnerability in Python, it should be 
considered a vulnerability for every other tool/library that accept `;` as 
separator. For example, Twisted seems to have a parse_qs method in web/http.py 
file that splits by both `;` and `&`.

Again, I feel like we are blaming the wrong piece of the stack, unless proxies 
are usually ignoring some arguments (e.g. utm_*) as part of the cache key, by 
default or in a very easy way.

----------

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42967>
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