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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-59203

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

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

python-pillow Pillow

  • >= 12.0.0, < 12.3.0affected

References