CVE-2026-109324 Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms
Authenticated users can cause denial of service by uploading oversized images that exhaust server memory during transformation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109324?
CVE-2026-109324 is a high-severity denial of service vulnerability in getgrav grav, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-409
Which versions are affected by CVE-2026-109324?
How do I fix CVE-2026-109324?
No fix has been published for CVE-2026-109324 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-109324 being exploited?
There is no known exploitation of CVE-2026-109324 in the wild and no public exploit code.
Sources
Also known as GHSA-fr83-pf82-gwp5, GHSA-h253-r5hw-95r5.