High 7.5Published Jul 6, 2026

CVE-2026-54060Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`

Updated under an hour ago (Oct 27, 2026, 7:40 AM ET)

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Every CVE for python-pillow Pillow

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

python-pillow Pillow python_pillow:pillow (from the name)	before 12.3.0	CNA record
python pillow python:pillow	before 12.3.0	NVD

References

References

https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x94-69rx-g8h2	x-refsource-confirm, exploit, vendor-advisory
https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d	x-refsource-misc, patch
https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.