CVE-2026-59203

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83	Patch
https://github.com/python-pillow/Pillow/pull/9708	Issue Tracking Patch
https://github.com/python-pillow/Pillow/releases/tag/12.3.0	Release Notes
https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798	Exploit Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-14 16:17

Updated : 2026-07-15 14:18

NVD link : CVE-2026-59203

Mitre link : CVE-2026-59203

CVE.ORG link : CVE-2026-59203

JSON object : View

Products Affected

python

pillow

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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