vllm API endpoints vulnerable to Denial of Service Attacks
Summary
A Denial of Service (DoS) vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion, potentially leading to a crash or unresponsiveness. The attack does not require authentication, making it exploitable by any remote user.
Details
The vulnerability leverages the abuse of HTTP headers. By setting a header such as X-Forwarded-For to a very large value like ("A" * 5_800_000_000), the server's HTTP parser or application logic may attempt to load the entire request into memory, overwhelming system resources.
Impact
What kind of vulnerability is it? Who is impacted? Type of vulnerability: Denial of Service (DoS)
Resolution
Upgrade to a version of vLLM that includes appropriate HTTP limits by deafult, or use a proxy in front of vLLM which provides protection against this issue.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | vllm | >= 0.1.0, < 0.10.1.1 | 0.10.1.1 |
Referencias
- https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47
- https://nvd.nist.gov/vuln/detail/CVE-2025-48956
- https://github.com/vllm-project/vllm/pull/23267
- https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944
- https://github.com/vllm-project/vllm
- https://pypi.org/project/vllm
- https://github.com/advisories/GHSA-rxc4-3w6r-4v47
- https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2021.yaml
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-400- Plataforma
- Python (PyPI)
- Paquete
vllm- Publicada
- 21.08.2025
- Actualizado
- 11.10.2026 15:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-2021 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-rxc4-3w6r-4v47 - CC BY 4.0
Historial de vulnerabilidades: vllm
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 94
- Primera → última
- 09.2024 10.2026
- Sin corrección
- 5
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 9
- Alta 23
- Media 47
- Baja 4
- Sin evaluar 11
Divulgaciones por año
- 2024: 2
- 2025: 30
- 2026: 62
-
vllm API endpoints vulnerable to Denial of Service Attacks esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.