Directus's S3 assets become unavailable after a burst of malformed transformations
Summary
When making many malformed transformation requests at once, at some point, all assets are being served as 403.
Details
When I was investigating this issue, I have found that after a burst of malformed asset transformation requests, the amount of sockets held on Agent on NodeHttpHandler was always equal to STORAGE_CLOUD_MAX_SOCKETS making it impossible to have new connections causing assets to be inaccessible.
After looking into this issue on AWS SDK I found that if the stream is requested, it needs to be consumed otherwise will hang forever. And as can be seen here the stream is not consumed, because sharp will throw an error on the invalid arguments. For example ?height=xyz
The timeouts set here had no noticeable effect on tests made.
PoC
This can be easily reproduced with the following steps:
- setup AWS S3 storage
- set STORAGE_CLOUD_MAX_SOCKETS: "50" (this value is lower than default for easier reproduction)
- upload a file to your project
- run this file (Replace the the file ID with the one you just uploaded):
import axios from "axios";
async function start() {
Array.from({ length: 400 }, (_, i) => {
axios
.get(
"http://localhost:8055/assets/e536aa35-3a81-4fa9-b856-3780584d38d8?width=100&height=XYZ"
)
.then(() => console.log("✅"))
.catch((e) =>
console.log("⛔", e.response?.status || e.code || e.message)
);
});
}
start();Here's an example:
https://github.com/user-attachments/assets/7f5a6f51-1c51-4d4d-aa4f-c4953e91714c
Impact
This causes denial of assets for all policies of Directus, including Admin and Public.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | directus | >= 9.22.0, < 11.5.0 | 11.5.0 |
| Paquete de npm | @directus/storage-driver-s3 | >= 9.22.0, < 12.0.1 | 12.0.1 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Debilidad (CWE)
CWE-770- Plataforma
- npm
- Paquete
directus, @directus/storage-driver-s3- Publicada
- 26.03.2025
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-j8xj-7jff-46mx - CC BY 4.0
Historial de vulnerabilidades: directus
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
- 58
- Primera → última
- 04.2022 07.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 2
- Alta 19
- Media 34
- Baja 3
Divulgaciones por año
- 2022: 4
- 2023: 8
- 2024: 14
- 2025: 17
- 2026: 15
-
Directus's S3 assets become unavailable after a burst of malformed transformations esta entrada
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