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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
NVD MITRE
EPSS Score
0.4%
Top 66.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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

AV:LAC:LPR:NUI:RS:UC:HI:LA:N
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-176CWE-697

Affected Products

python
oss-project·US
setuptools
OSS Libraries
pypa
oss-projectaka pipenv, pypa/setuptools, pip
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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