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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-40192

Pillow is vulnerable to a FITS GZIP decompression bomb

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

python-pillow Pillow

  • >= 10.3.0, < 12.2.0affected

References