Vulnerabilities CVE-2026-59203

CVE-2026-59203

Medium

Open

TLP:CLEAR

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

NVD CVE.org

DDoS

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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.

Details

CVSS Score: 5.3
EPSS Score ⓘ: 0.40%

32.7th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Confidence: 90%
Published: Jul 14, 2026
Last Modified: Jul 15, 2026

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