CVE-2026-55380

PoC —

CVSS 3.1

7.5 high

EPSS

<1%p35

Published

Jul 6, 2026 (Jul 6, 2026)

Modified

Jul 7, 2026

Description

Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.

Vendors: python
Products: pillow
Weakness: CWE-789
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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