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 CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0029.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
pypa setuptools affected
Version Status Constraints
< 83.0.0 affected —

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-h35f-9h28-mq5c setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f cve-icon cve-icon
https://github.com/pypa/setuptools/releases/tag/v83.0.0 cve-icon cve-icon
https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-59890 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-59890 cve-icon
History

Sat, 11 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1025
References
Metrics threat_severity

None

 threat_severity

Moderate

Fri, 10 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Python
Python setuptools
Vendors & Products Python
Python setuptools

Wed, 08 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 08 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+
Weaknesses CWE-176
CWE-697
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-08T16:44:52.269Z

Reserved: 2026-07-07T16:40:07.983Z

Link: CVE-2026-59890

cve-icon Vulnrichment

Updated: 2026-07-08T16:44:07.106Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-08T16:02:07Z

Links: CVE-2026-59890 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-23T11:45:02Z

Weaknesses