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Advisories

Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms

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severity
high
date
Affecting

  • grav >= 0, < 2.1.7

CWE
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
manus-pi, manus-use
Description
Grav before 2.1.7 contains a denial of service vulnerability that allows authenticated media authors to exhaust memory by uploading compressed oversized raster images. Attackers can reference a Twig or Markdown transform so GD or Imagick decodes the full source without dimension checks, letting anonymous requests repeatedly cause page unavailability.

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