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Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service

python-pillow Pillow · CVE-2026-59203
0 news outlets0 CERTs and agencies0 researchers

What is it?

Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. 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
5.3
EPSS
0.4%
First seen
1 d ago
Status
corroborated

All python-pillow vulnerabilities