---
cve: "CVE-2025-48956"
severity: "HIGH"
cvss: 7.5
epss: "56%"
vendor: "vllm-project"
kev: false
exploited: false
published: "2025-08-21 15:15:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T11:18:55+02:00"
---

# CVE-2025-48956

> 7.5 HIGH · 🧪 PoC

## Beschreibung

vLLM is an inference and serving engine for large language models (LLMs). From 0.1.0 to before 0.10.1.1, 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. This vulnerability is fixed in 0.10.1.1.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 1da94e673c257373280026f75ceb4effac80e892 (Commit)
- d8b736f913a59117803d6701521d2e4861701944 (Commit)

## Referenzen

- <https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47>
- <https://github.com/vllm-project/vllm/pull/23267>
- <https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-48956) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_