GHSA-p9w7-82w4-7q8m: Picklescan is missing detection when calling built-in python lib2to3.pgen2.pgen.ParserGenerator.make_label

August 26, 2025

Using lib2to3.pgen2.pgen.ParserGenerator.make_label function, which is a built-in python library function to execute remote pickle file.

References

github.com/advisories/GHSA-p9w7-82w4-7q8m
github.com/mmaitre314/picklescan
github.com/mmaitre314/picklescan/commit/1931c2d04eaca8d20597705ff39cab78ba364e4b
github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m

Code Behaviors & Features

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