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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| getgrav | grav | < 2.1.7 | 2.1.7 |
References
- GitHub Security Advisory (GHSA-h253-r5hw-95r5) vendor-advisory
- VulnCheck Advisory: Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms third-party-advisory