Description
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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-48746 ↗
- github.com/vllm-project/vllm/pull/43426 ↗
- github.com/vllm-project/vllm/security/advisories/GHSA-94f4-hr76-p5j6 ↗
- x41-dsec.de/lab/advisories/x41-2026-002-starlette ↗
- access.redhat.com/errata/RHSA-2026:30088 ↗
- access.redhat.com/errata/RHSA-2026:30089 ↗
- access.redhat.com/errata/RHSA-2026:36005 ↗
- access.redhat.com/errata/RHSA-2026:36006 ↗
- access.redhat.com/errata/RHSA-2026:42132 ↗
- access.redhat.com/errata/RHSA-2026:42142 ↗
- access.redhat.com/errata/RHSA-2026:42644 ↗
- access.redhat.com/errata/RHSA-2026:43038 ↗
- access.redhat.com/errata/RHSA-2026:61627 ↗
- access.redhat.com/errata/RHSA-2026:61629 ↗
- access.redhat.com/security/cve/CVE-2026-48746 ↗
- bugzilla.redhat.com/show_bug.cgi ↗
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48746.json ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.