← Database

CVE-2026-59200

HIGH CVSS: 7.5 Published: 2026-07-14 Modified: 2026-07-21

Description

Pillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.

Affected Platforms

Python Pillow

Weakness Type

CWE-400, CWE-770

References