CVE-2025-48956

high

Description

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.

References

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

Details

Source: Mitre, NVD

Published: 2025-08-21

Updated: 2025-10-09

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00248