CVE-2026-40192

High CVSS: 8.7

Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.

Vendor

Product

CWE

CWE-400

Yayın Tarihi

2026-04-15 23:16:10

Güncelleme

2026-04-17 15:38:09

Source Identifier

security-advisories@github.com

KEV Date Added

Kategoriler

CWE-400 HIGH 2026

Referanslar

https://github.com/python-pillow/Pillow/commit/3cb854e8b2bab43f40e342e665f9340d861aa628 https://github.com/python-pillow/Pillow/pull/9521 https://github.com/python-pillow/Pillow/security/advisories/GHSA-whj4-6x5x-4v2j https://pillow.readthedocs.io/en/stable/releasenotes/12.2.0.html#prevent-fits-decompression-bomb