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.
History

Thu, 28 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-130
References
Metrics threat_severity

None

threat_severity

Important


Sat, 23 Aug 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Vllm-project
Vllm-project vllm
Vendors & Products Vllm-project
Vllm-project vllm

Thu, 21 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 21 Aug 2025 15:00:00 +0000

Type Values Removed Values Added
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.
Title vLLM API endpoints vulnerable to Denial of Service Attacks
Weaknesses CWE-400
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-08-21T15:02:09.023Z

Reserved: 2025-05-28T18:49:07.585Z

Link: CVE-2025-48956

cve-icon Vulnrichment

Updated: 2025-08-21T15:01:54.882Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-21T15:15:32.230

Modified: 2025-08-22T18:09:17.710

Link: CVE-2025-48956

cve-icon Redhat

Severity : Important

Publid Date: 2025-08-26T14:51:41Z

Links: CVE-2025-48956 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-23T10:55:44Z