CVE-2026-59890: Python Setuptools

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Python Setuptools: before 83.0.0 (fixed in 83.0.0)

Published 2026-07-08. Last modified 2026-07-13.