CVE-2026-59890

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

Published: Jul 8, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-176

6.1MEDIUM

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-176 CWE-697

Affected Products

oss-project·US

oss-projectaka pipenv, pip, pypa/setuptools

setuptoolsLibrary

OSS Libraries / pypi

Exploitability

Official Patch Available

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References

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

github.com

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

github.com

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

github.com

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