Vulnerability in Pypa Setuptools
CVE-2026-59890
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Pypa Setuptools — versions < 83.0.0
- Python Setuptools
Weakness classification (CWE)
References
- github.com/pypa/setuptools/security/advisories/GHSA-h35f-9h28-mq5c (Exploit, Mitigation, Vendor Advisory)
- github.com/pypa/setuptools/commit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f (Patch)
- github.com/pypa/setuptools/releases/tag/v83.0.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-59890?
- CVE-2026-59890 is a medium-severity vulnerability in Pypa Setuptools, classified under CWE-176. CVSS score: 6.1/10. Published 2026-07-08.
- How severe is CVE-2026-59890?
- Medium severity. CVSS v3 base score is 6.1 out of 10.