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CVE-2026-40192

Medium

Elevated severity or exploit probability.

CVSS base
7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.9%
56.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-409
Published 2026-04-15 · modified 2026-09-10

Description

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.

Affected

python

References

Official: NVD · CVE.org