6.1Medium
CVE-2026-59890setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD) on macOS APFS/HFS+
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| pypa | setuptools | < 83.0.0 | |
| python | setuptools | < 83.0.0 |
References and patches
- https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c ExploitVendor AdvisoryMitigation
- https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f Patch
- https://github.com/pypa/setuptools/releases/tag/v83.0.0 Release Notes
CPE matches (NVD) (1)
cpe:2.3:a:python:setuptools:*:*:*:*:*:*:*:*< 83.0.0