Bug 2369475 (CVE-2025-48942) - CVE-2025-48942 vllm: vLLM denial of service via invalid JSON schema
Summary: CVE-2025-48942 vllm: vLLM denial of service via invalid JSON schema
Keywords:
Status: NEW
Alias: CVE-2025-48942
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-30 19:01 UTC by OSIDB Bzimport
Modified: 2025-06-03 14:27 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-05-30 19:01:10 UTC 
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.
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