Back to Database
Status published
Medium
CVE-2025-48942
vLLM DOS: Remotely kill vllm over http with invalid JSON schema
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-48942
Credits & Attribution
No credits recorded in the NVD database.
References
More from vllm-project
View All →CVE-2025-66448
vLLM vulnerable to remote code execution via transformers_utils/get_config
High
7.1
CVE-2025-62426
vLLM vulnerable to DoS via large Chat Completion or Tokenization requests with specially crafted `chat_template_kwargs`
Medium
6.5
CVE-2025-62372
vLLM vulnerable to DoS with incorrect shape of multimodal embedding inputs
High
8.3
CVE-2025-62164
VLLM deserialization vulnerability leading to DoS and potential RCE
High
8.8
CVE-2025-59425
vLLM vulnerable to timing attack at bearer auth
High
7.5
Affected Vendor
vllm-project
View all reports →Affected Software
vllm
Vulnerable Versions:
>= 0.8.0, < 0.9.0
Timeline
Official Publish:
May 30th, 2025
Last Modified:
May 30th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H