CVE-2026-59890

MEDIUM6.1

setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+

Published Jul 8, 2026

Modified 1 months ago

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.

References

WEB

https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f

WEB

https://github.com/pypa/setuptools/releases/tag/v83.0.0

WEB

https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-59890

CVSS Analysis

CVSS v3.1

6.1