---
id: CVE-2026-109324
title: >-
  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
summary: >-
  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…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-409
published: '2026-10-12'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T17:17:25.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109324'
references:
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-h253-r5hw-95r5'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/grav-before-2.1.7-memory-exhaustion-via-oversized-image-transforms
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.0032
epssPercentile: 0.23229
ingestedAt: '2026-10-12T18:00:08.202Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.