CVE-2026-59203

EUVD-2026-43741
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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
pythonpillow
12.0.0 ≤
𝑥
< 12.3.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83
https://github.com/python-pillow/Pillow/pull/9708
https://github.com/python-pillow/Pillow/releases/tag/12.3.0
https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798