CVE-2025-48942 — Uncaught Exception in Vllm

CWE-248 — Uncaught Exception8 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 56.55%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
VllmVllm-project Vllm
Timeline
PublishedMay 30

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶NVDvllm/vllm0.8.0 — 0.9.0
▶PyPIvllm/vllm0.8.0 — 0.9.0+1
▶CVEListV5vllm-project/vllm>= 0.8.0, < 0.9.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
CVE-2025-48943: vLLM is an inference and serving engine for large language models (LLMs)↗2025-05-30
▶
OSV
CVE-2025-48942: vLLM is an inference and serving engine for large language models (LLMs)↗2025-05-30
▶
OSV
vLLM DOS: Remotely kill vllm over http with invalid JSON schema↗2025-05-28
▶
GHSA
vLLM DOS: Remotely kill vllm over http with invalid JSON schema↗2025-05-28
▶

📋Vendor Advisories

2
Red Hat
vllm: Remote crash of vllm server with invalid regex↗2025-05-30
▶
Red Hat
vllm: vLLM denial of service via invalid JSON schema↗2025-05-30
▶