CVE-2025-48943

Published: May 30, 2025Modified: Jun 17, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Vllm: Vllm

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Vllm Vllm	From 0.8.0 to 0.9.0

Related CWEs

Uncaught Exception

An exception is thrown from a function, but it is not caught.

References (4)

https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff

Source: security-advisories@github.com

Patch

https://github.com/vllm-project/vllm/issues/17313

Source: security-advisories@github.com

Issue Tracking

https://github.com/vllm-project/vllm/pull/17623

Source: security-advisories@github.com

Issue TrackingPatch

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

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.