CVE-2025-48942
Last modified
CVE-2025-48942 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vllm | Vllm | >= 0.8.0, < 0.9.0 |
References
- https://github.com/vllm-project/vllm/issues/17248Issue Tracking
- https://github.com/vllm-project/vllm/pull/17623Issue Tracking, Patch
- https://github.com/vllm-project/vllm/security/advisories/GHSA-6qc9-v4r8-22xgExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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