Bug 2458856 (CVE-2026-40192) - CVE-2026-40192 Pillow: Pillow: Denial of Service via decompression bomb in FITS image processing
Summary: CVE-2026-40192 Pillow: Pillow: Denial of Service via decompression bomb in FI...
Keywords:
Status: NEW
Alias: CVE-2026-40192
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2459001 2459007
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-16 00:01 UTC by OSIDB Bzimport
Modified: 2026-04-16 18:50 UTC (History)
59 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-16 00:01:13 UTC 
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.
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