CVE-2025-48942
MEDIUMvLLM <0.9.0 - DoS
Title source: llmDescription
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.
Scores
CVSS v3
6.5
EPSS
0.0007
EPSS Percentile
20.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Classification
CWE
CWE-248
Status
published
Affected Products (2)
vllm/vllm
< 0.9.0
pypi/vllm
< 0.9.0PyPI
Timeline
Published
May 30, 2025
Tracked Since
Feb 18, 2026