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CVE-2026-48746

vLLM: OpenAI auth bypass

CVSS 3.1 9.1 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-48746

Published

vLLM is an inference and serving engine for large language models (LLMs). From 0.3.0 until 0.22.0, a vulnerability in ASGI web servers and starlette's trust on those web servers enables an authentication bypass of the OpenAI API AuthenticationMiddleware. It allows to use the API without providing the configured VLLM_API_KEY or --api-key. This vulnerability is fixed in 0.22.0.

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Affected versions, risk and source history

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CVE-2026-48746 · CVE overview and exploitation status

cve-program · CVE-2026-48746

Related changes

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 12:08 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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