CVE-2026-59890 | THREATINT

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.

PUBLISHED Reserved 2026-07-07 | Published 2026-07-08 | Updated 2026-07-08 | Assigner GitHub_M

MEDIUM: 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Problem types

CWE-176: Improper Handling of Unicode Encoding

CWE-697: Incorrect Comparison

Product status

< 83.0.0

affected

References

github.com/...ptools/security/advisories/GHSA-h35f-9h28-mq5c exploit

github.com/...ptools/security/advisories/GHSA-h35f-9h28-mq5c

github.com/...ommit/dd9f436a36486b4cb8a4c70a2321548b0be09b8f

github.com/pypa/setuptools/releases/tag/v83.0.0

cve.org (CVE-2026-59890)

nvd.nist.gov (CVE-2026-59890)

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