CVE-2026-112893

Pillow: Invalid free in FreeType glyph rendering when a stroker is active

State: Published
Severity: 8.2 High
Published: Oct 19, 2026
Updated: Oct 28, 2026
Reserved: Oct 19, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-457 Use of Uninitialized Variable
CWE-763 Release of Invalid Pointer or Reference

Affected Products

Product	Versions
Pillowpython-pillow	>= 10.0.0, < 13.0.0Affected

References

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