CVE-2026-40192
Python vulnerability analysis and mitigation

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.


SourceNVD

Related Python vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-66hx-chf7-3332HIGH8.8
  • PythonPython
  • pyload-ng
NoNoApr 14, 2026
CVE-2026-40192HIGH8.7
  • PythonPython
  • pillow
NoYesApr 15, 2026
CVE-2026-40347MEDIUM5.3
  • PythonPython
  • python-multipart
NoYesApr 15, 2026
GHSA-jj6c-8h6c-hppxMEDIUM4.8
  • PythonPython
  • pypdf
NoYesApr 15, 2026
GHSA-fj52-5g4h-gmq8LOW2.9
  • PythonPython
  • pyload-ng
NoNoApr 14, 2026

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