CVE-2026-54060
Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new("1", (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.
- Score
- CVSS 3.1 7.5 High
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-07-06
- Last modified
- 2026-10-25
- Weaknesses
- CWE-789
Affected products
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x94-69rx-g8h2
- https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d
- https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst
