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Improper Handling of Unicode Encoding

CVE-2026-59890

Severity Medium
Score 6.1/10

Summary

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.

  • LOW
  • LOCAL
  • LOW
  • UNCHANGED
  • REQUIRED
  • NONE
  • HIGH
  • NONE

CWE-176 - Improper Handling of Unicode Encoding

The software does not properly handle when an input contains Unicode encoding.

References

Advisory Timeline

  • Published