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CVE-2026-40192

8.7 high SSVC exploitation: none Modified
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.7 · pythonNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

References 35