Marc-Andre Lemburg <m...@egenix.com> added the comment:

Dave Malcolm wrote:
> 
> If anyone is aware of an attack via numeric hashing that's actually
> possible, please let me know (privately).  I believe only specific apps
> could be affected, and I'm not aware of any such specific apps.

I'm not sure what you'd like to see.

Any application reading user provided data from a file, database,
web, etc. is vulnerable to the attack, if it uses the read numeric
data as keys in a dictionary.

The most common use case for this is a dictionary mapping codes or
IDs to strings or objects, e.g. for caching purposes, to find a list
of unique IDs, checking for duplicates, etc.

This also works indirectly on 32-bit platforms, e.g. via date/time
or IP address values that get converted to key integers.

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<http://bugs.python.org/issue13703>
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