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CVE-2025-48943

MEDIUM

6.5

Description

vLLM is an inference and serving engine for large language models (LLMs). Version 0.8.0 up to but excluding 0.9.0 have a Denial of Service (ReDoS) that causes the vLLM server to crash if an invalid regex was provided while using structured output. This vulnerability is similar to GHSA-6qc9-v4r8-22xg/CVE-2025-48942, but for regex instead of a JSON schema. Version 0.9.0 fixes the issue.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published5/30/2025

Last Modified6/24/2025

Sourcenvd

Honeypot Sightings0

Affected Products

vllm:vllm

Weaknesses (CWE)

CWE-248

References

https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff(security-advisories@github.com)

https://github.com/vllm-project/vllm/issues/17313(security-advisories@github.com)

https://github.com/vllm-project/vllm/pull/17623(security-advisories@github.com)

https://github.com/vllm-project/vllm/security/advisories/GHSA-9hcf-v7m4-6m2j(security-advisories@github.com)

IOC Correlations

No correlations recorded

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