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Critical severity9.1NVD Advisory· Published Feb 7, 2021· Updated Jun 17, 2026

CVE-2020-36242

CVE-2020-36242

Description

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
cryptographyPyPI
>= 3.1, < 3.3.23.3.2

Affected products

1342

Patches

Vulnerability mechanics

References

13

News mentions

0

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