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.

• CWE-835

• https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83Patch
• https://github.com/python-pillow/Pillow/pull/9708Issue Tracking, Patch
• https://github.com/python-pillow/Pillow/releases/tag/12.3.0Release Notes
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798Exploit, Vendor Advisory
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798Exploit, Vendor Advisory

Published

Jul 14, 2026

Last Modified

Jul 15, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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