CVE-2026-59890

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 6.1
EPSS 0.0027
EPSS Percentile 18.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-176 CWE-697
Status published
Products (2)
pypa/setuptools < 83.0.0
python/setuptools < 83.0.0
Published Jul 08, 2026
Tracked Since Jul 08, 2026