CVE-2025-48942

Summary

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

Severity

medium

EPSS

0.5% (p36)

Also known as

GHSA-6qc9-v4r8-22xg, PYSEC-2025-54

Published

2025-05-30

References

• https://github.com/vllm-project/vllm/security/advisories/GHSA-6qc9-v4r8-22xg
• https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff
• https://github.com/vllm-project/vllm/pull/17623

Related advisories

• CVE-2026-48746 — critical · PyPI/vllm
• CVE-2026-22778 — critical · PyPI/vllm
• CVE-2025-47277 — critical · PyPI/vllm
• CVE-2025-32444 — critical · PyPI/vllm
• GHSA-ggpf-24jw-3fcw — critical · PyPI/vllm
• CVE-2024-9052 — critical · PyPI/vllm
• CVE-2024-9053 — critical · PyPI/vllm
• CVE-2024-11041 — critical · PyPI/vllm

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