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Pillow GdImageFile decompression bomb protection bypass

python-pillow Pillow · CVE-2026-55380
0 news outlets0 CERTs and agencies0 researchers

What is it?

Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. 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

All python-pillow vulnerabilities