CVE-2026-42308

Summary

Pillow is a Python imaging library. Prior to version 12.2.0, if a font advances for each glyph by an exceeding large amount, when Pillow keeps track of the current position, it may lead to an integer overflow. This issue has been patched in version 12.2.0.

Severity

medium

EPSS

0.1% (p2)

Also known as

GHSA-wjx4-4jcj-g98j, BIT-pillow-2026-42308, PYSEC-2026-165

Published

2026-05-09

References

• https://github.com/python-pillow/Pillow/releases/tag/12.2.0
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-wjx4-4jcj-g98j

Related advisories

• CVE-2026-42311 — high · PyPI/pillow
• CVE-2026-40192 — high · PyPI/pillow
• CVE-2026-25990 — high · PyPI/pillow
• CVE-2026-42310 — medium · PyPI/pillow
• CVE-2026-42309 — medium · PyPI/pillow
• CVE-2025-48379 — medium · PyPI/pillow

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