CVE WatchJul 15, 2026

CVE-2026-40192

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 FIT

CVSS

7.5

High

EPSS

0.7%

p48

KEV

—

Exploit Today

0-100

Published: Apr 15, 2026 · Last modified: Jul 15, 2026 · CWE-400 · CWE-770 · CWE-409

EPSS · 30d

0.7%EPSS · 30 days0.7%

2026-06-302026-07-17

Technical 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.

Official references

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