What is GHSA-wjx4-4jcj-g98j?

GHSA-wjx4-4jcj-g98j is a security advisory published by GitHub Security Advisories with Medium severity. Pillow has an integer overflow when processing fonts

Which CVE IDs does GHSA-wjx4-4jcj-g98j cover?

GHSA-wjx4-4jcj-g98j covers the following CVE IDs: CVE-2026-42308. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wjx4-4jcj-g98j?

GHSA-wjx4-4jcj-g98j has a CVSS v3 base score of 5.5, published by GitHub Security Advisories.

Which products are affected by GHSA-wjx4-4jcj-g98j?

GHSA-wjx4-4jcj-g98j affects 1 product, including: pip/pillow:\u003c 12.2.0.

GHSA-wjx4-4jcj-g98jMediumCVSS 5.5

Pillow has an integer overflow when processing fonts

Vendor

GitHub Security Advisories

Published

May 4, 2026

Last Modified

June 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-42308 →

📋 Description

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 has been fixed.

🎯 Affected products1

pip/pillow:< 12.2.0

🔗 References (5)

https://github.com/python-pillow/Pillow/security/advisories/GHSA-wjx4-4jcj-g98j
https://nvd.nist.gov/vuln/detail/CVE-2026-42308
https://github.com/python-pillow/Pillow/releases/tag/12.2.0
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-165.yaml
https://github.com/advisories/GHSA-wjx4-4jcj-g98j