CVE-2026-112893

Pillow is a Python imaging library. From 10.0.0 until 13.0.0, Pillow can free an invalid glyph pointer during FreeType rendering with an active stroker. If FT_Load_Glyph fails, cleanup may call FT_Done_Glyph on an uninitialized or stale glyph variable. An attacker can supply a malformed font as untrusted bytes to an application that draws text with a nonzero stroke width, forcing the glyph-load failure path. This can corrupt memory or crash the process. This issue is fixed in version 13.0.0.

Score

CVSS 4.0 8.2 High

Status

Modified - security-advisories@github.com

Published

2026-10-19

Last modified

2026-10-28

Weaknesses

CWE-457, CWE-763

Affected products

• Pillow (Python)
• Pillow (Python-pillow)

References

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-j4m9-6w36-pw47
• https://github.com/python-pillow/Pillow/commit/a7416de7f3a43128179d2cf68df3240ea8dafe13
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0