CVE-2025-48942 MEDIUM

CVE-2025-48942: vLLM DOS: Remotely kill vllm over http with invalid JSON schema

Vendor Vllm-Project
Product vllm
Weakness CWE-248
Published May 30, 2025
Last update May 30, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

vLLM is an inference and serving engine for large language models (LLMs). In versions 0.8.0 up to but excluding 0.9.0, hitting the /v1/completions API with a invalid json_schema as a Guided Param kills the vllm server. This vulnerability is similar GHSA-9hcf-v7m4-6m2j/CVE-2025-48943, but for regex instead of a JSON schema. Version 0.9.0 fixes the issue.

Key dates

02Disclosure timeline

May 30, 2025 CVE published
May 30, 2025 Record updated