---
id: CVE-2026-115917
title: >-
  vLLM: Permissive default CORS origins allow cross-origin requests to the vLLM
  HTTP server
summary: >-
  vLLM is an inference and serving engine for large language models. Prior to
  0.32.0, the OpenAI-compatible server configures Starlette CORSMiddleware with
  allowed_origins set to a wildcard by default. A malicious web page can use a
  victim…
severity: low
cvss: 3.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-942
vendor: vllm-project
product: vllm
affected:
  - vllm < 0.32.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-31T01:38:43.564283Z'
published: '2026-10-26'
updated: '2026-10-31'
sourceUpdated: '2026-10-31T01:38:53.155Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115917'
references:
  - url: >-
      https://github.com/vllm-project/vllm/security/advisories/GHSA-vvpg-rrww-wpmh
    label: >-
      https://github.com/vllm-project/vllm/security/advisories/GHSA-vvpg-rrww-wpmh
  - url: 'https://github.com/vllm-project/vllm/pull/61009'
    label: 'https://github.com/vllm-project/vllm/pull/61009'
  - url: >-
      https://github.com/vllm-project/vllm/commit/fcae5c98870ff2c20659731dce7ba3a3ff0d48aa
    label: >-
      https://github.com/vllm-project/vllm/commit/fcae5c98870ff2c20659731dce7ba3a3ff0d48aa
  - url: 'https://github.com/vllm-project/vllm/releases/tag/v0.32.0'
    label: 'https://github.com/vllm-project/vllm/releases/tag/v0.32.0'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-115917'
  - url: 'https://github.com/vllm-project/vllm'
  - url: 'https://github.com/advisories/GHSA-vvpg-rrww-wpmh'
tags:
  - cve.org
  - osv
  - pip
  - ghsa
epss: 0.0024
epssPercentile: 0.15284
aliases:
  - GHSA-vvpg-rrww-wpmh
  - PYSEC-2026-4348
ecosystem: pip
patched:
  - vllm 0.32.0
ingestedAt: '2026-10-26T17:33:33.055Z'
---

## Overview

vLLM is an inference and serving engine for large language models. Prior to 0.32.0, the OpenAI-compatible server configures Starlette CORSMiddleware with allowed_origins set to a wildcard by default. A malicious web page can use a victim's browser to reach an unauthenticated vLLM server on localhost, an internal network, or a VPN, call endpoints including GET /v1/models and POST /v1/chat/completions, consume GPU resources, and read responses. Cookie-based cross-site request forgery does not apply because credentials are disabled by default, and deployments requiring bearer authentication are exposed only when the caller already has a usable token. This issue is fixed in version 0.32.0.

## Affected

- `vllm < 0.32.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-115917)

Affected packages:

- `vllm < 0.32.0`

Patched in:

- `vllm 0.32.0`

Source: https://osv.dev/vulnerability/GHSA-vvpg-rrww-wpmh