CVE-2026-59890
setuptools is a package that allows users to download, build, install, upgrade, and uninstall Python packages.
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
- EPSS
- 0.40% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-176, CWE-697
- Affected
- python/setuptools
- Source
- security-advisories@github.com
References
- https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8fPatch
- https://github.com/pypa/setuptools/releases/tag/v83.0.0Release Notes
- https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5cExploit, Vendor Advisory, Mitigation
- https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5cExploit, Vendor Advisory, Mitigation
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.