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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

NumPyGHSA-9fq2-x9r6-wfmf

Numpy Deserialization of Untrusted Data

NumPy

CVE-2019-6446 · Published May 24, 2022 · updated Jul 6, 2026

Critical9.8
Fix: upgrade to 1.16.3 or later
GitHub advisory

DISPUTED An issue was discovered in NumPy 1.16.2 and earlier. It uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, as demonstrated by a numpy.load call. NOTE: third parties dispute this issue because it is a behavior that might have legitimate applications in (for example) loading serialized Python object arrays from trusted and authenticated sources.

Affected versions

PackageAffectedFixed in
numpy
PyPI
< 1.16.31.16.3
Details and references

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