Next.js has a Denial of Service in the Image Optimization API
Impact
When self-hosting Next.js with the default image loader, the Image Optimization API fetches local images entirely into memory without enforcing a maximum size limit. An attacker could cause out-of-memory conditions by requesting large local assets from the /_next/image endpoint that match the images.localPatterns configuration (by default, all patterns are allowed).
- If you are using
images.localPatterns, only the patterns in that array are impacted. - If you are using
images.unoptimized: true, you are NOT impacted. - If you are using
images.loader: 'custom', you are NOT impacted. - If you are using Vercel, you are NOT impacted.
Fix
We now apply response size limits consistently to internal image fetches, not just external ones, and fail oversized responses before they can exhaust process memory.
This can be adjusted using the images.maximumResponseBody configuration.
Workarounds
If you cannot upgrade immediately, avoid routing large local assets through /_next/image, disable image optimization for large or untrusted local files, or block image optimization access to those assets at the edge.
You can disable using the images.localPatterns: [] configuration. This will still allow fetching remote images (which is not impacted).
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | next | >= 10.0.0, < 15.5.16, >= 16.0.0, < 16.2.5 | 15.5.16, 16.2.5 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-770- Plataforma
- npm
- Paquete
next- Publicada
- 11.05.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-h64f-5h5j-jqjh - CC BY 4.0
Historial de vulnerabilidades: next
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 73
- Primera → última
- 12.2017 10.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 5
- Alta 27
- Media 32
- Baja 9
Divulgaciones por año
- 2017: 1
- 2018: 2
- 2019: 0
- 2020: 3
- 2021: 3
- 2022: 3
- 2023: 1
- 2024: 6
- 2025: 14
- 2026: 40
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Next.js has a Denial of Service in the Image Optimization API esta entrada
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