PyPI/setuptools CVE-2026-59890: medium 6.1, EPSS 0.40%

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

Action: Upgrade setuptools to 83.0.0 or later.

pip install setuptools==83.0.0

Affected

Fixed versions

Sources

• osv: GHSA-h35f-9h28-mq5c
• https://github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c
• https://nvd.nist.gov/vuln/detail/CVE-2026-59890
• https://github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f
• https://github.com/pypa/advisory-database/tree/main/vulns/setuptools/PYSEC-2026-3447.yaml
• https://github.com/pypa/setuptools
• https://github.com/pypa/setuptools/releases/tag/v83.0.0

CVE-2026-59890 · published 2026-07-21T19:09:21Z · modified 2026-09-10T03:50:52.323347787Z · JSON