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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/vllm-project/vllm/commit/fcae5c98870ff2c20659731dce7ba3a3ff0d48aa Patch
- https://github.com/vllm-project/vllm/pull/61009 Patch
- https://github.com/vllm-project/vllm/security/advisories/GHSA-vvpg-rrww-wpmh Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 7
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-28 15:35
- StatusPublished → AnalyzedNVD modified 2026-10-28 15:35
- CVSS3.4 (v3.1, CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N) → 4.7 (v3.1, CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N)NVD modified 2026-10-28 15:35
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-26 17:20
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-26 18:34
- StatusReceived → PublishedNVD modified 2026-10-26 17:20
- First seenCVSS 3.4NVD modified 2026-10-26 18:17
Affected (CPE criteria) 1
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
References 4
- https://github.com/vllm-project/vllm/commit/fcae5c98870ff2c20659731dce7ba3a3ff0d48aa Patch
- https://github.com/vllm-project/vllm/pull/61009 Patch
- https://github.com/vllm-project/vllm/releases/tag/v0.32.0 Release Notes
- https://github.com/vllm-project/vllm/security/advisories/GHSA-vvpg-rrww-wpmh Patch, Vendor Advisory