CVE-2026-109324CWE-409

CVE-2026-109324

Medium · published October 12, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
23.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · 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
EPSS
0.00320 · 23.8th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-10-12T21:17Z
References (2)
https://github.com/getgrav/grav/security/advisories/GHSA-h253-r5hw-95r5 · [email protected]https://www.vulncheck.com/advisories/grav-before-2.1.7-memory-exhaustion-via-oversized-image-transforms · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:05Z
    Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms
    cvelistv5
  • 12 OCT 16:05Z
    Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms
    cvelistv5