CVE-2026-54060CWE-789

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

High · published July 6, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00418 · 35.1th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-07-06T18:49Z
EPSS history
Timeline
  • 06 JUL 18:49Z
    Pillow: `FontFile.compile()`: `Image.new()` called without `_decompression_bomb_check()`
    cvelistv5