Moderate severityNVD Advisory· Published May 30, 2025· Updated May 30, 2025
vLLM DOS: Remotely kill vllm over http with invalid JSON schema
CVE-2025-48942
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
vllmPyPI | >= 0.8.0, < 0.9.0 | 0.9.0 |
Affected products
6- osv-coords5 versionspkg:apk/chainguard/py3.10-vllm-cuda-11.8pkg:apk/chainguard/py3.10-vllm-cuda-12.6pkg:apk/chainguard/py3.10-wheels-vllm-cuda-11.8pkg:apk/chainguard/tritonserver-backend-vllm-24.04pkg:pypi/vllm
< 0.9.0-r0+ 4 more
- (no CPE)range: < 0.9.0-r0
- (no CPE)range: < 0.9.0.1-r0
- (no CPE)range: < 0.9.0-r0
- (no CPE)range: < 24.04-r10
- (no CPE)range: >= 0.8.0, < 0.9.0
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-6qc9-v4r8-22xgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-48942ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-54.yamlghsaWEB
- github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ffghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/issues/17248ghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/pull/17623ghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/security/advisories/GHSA-6qc9-v4r8-22xgghsax_refsource_CONFIRMWEB
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