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

python-pillow Pillow · CVE-2026-54060
0 news outlets0 CERTs and agencies0 researchers

What is it?

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.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
7.5
EPSS
0.4%
First seen
1 d ago
Status
corroborated

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