CVE-2026-54060

Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`

Published Jul 6, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-5x94-69rx-g8h2 Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`
Ubuntu USN Ubuntu USN USN-8999-1 Pillow vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Python-pillow
Python-pillow pillow
Vendors & Products Python-pillow
Python-pillow pillow
Type Values Removed Values Added
Description 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.
Title Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 7, 2026, 2:08 PM
Reserved
Jun 11, 2026, 6:24 PM
Status
Analyzed
Published
Jul 6, 2026, 7:17 PM
Modified
Oct 25, 2026, 8:10 PM
Severity
Important
Public date
Jul 6, 2026, 6:49 PM