MEDIUM 6.1

PYSEC-2026-3447

Details

setuptools is a package that allows users to download, build, install, upgrade, and uninstall Python packages. Prior to 83.0.0, FileList applied MANIFEST.in exclude, global-exclude, recursive-exclude, and prune directives by matching compiled glob patterns against on-disk file names without Unicode normalization, so on macOS APFS or HFS+ an NFD file name could bypass an NFC exclusion rule and be packed into a source distribution. This issue is fixed in version 83.0.0.

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Affected packages

PyPI / setuptools

Introduced in: 0 Fixed in: 83.0.0

Fix pip install --upgrade 'setuptools>=83.0.0'

References

https://github.com/pypa/setuptools/releases/tag/v83.0.0 [ADVISORY]
https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f [FIX]
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c [EVIDENCE]