CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2025-48942
Medium (6.5) in vllm vllm. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in vllm 0.9.0.
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
- CWE
- CWE-248
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vllm:vllm
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-6qc9-v4r8-22xg | PyPI | vllm | >=0.8.0 <0.9.0 | 0.9.0 |
| PYSEC-2025-54 | PyPI | vllm | >=0.8.0 <0.9.0 | 0.9.0 |