CVE-2026-48746
critical · 9.1vLLM 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.
9.1
CVSS
1.2%
EPSS (exploit prob.)
66th
EPSS percentile
2026-06-22
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses
CWE-444CWE-501
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| vllm | vllm | >= 0.3.0, < 0.22.0 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/vllm-project/vllm/pull/43426
- https://github.com/vllm-project/vllm/security/advisories/GHSA-94f4-hr76-p5j6
- https://x41-dsec.de/lab/advisories/x41-2026-002-starlette
- https://access.redhat.com/errata/RHSA-2026:30088
- https://access.redhat.com/errata/RHSA-2026:30089
- https://access.redhat.com/errata/RHSA-2026:36005
- https://access.redhat.com/errata/RHSA-2026:36006
- https://access.redhat.com/errata/RHSA-2026:42132
- https://access.redhat.com/errata/RHSA-2026:42142
- https://access.redhat.com/errata/RHSA-2026:42644
- https://access.redhat.com/errata/RHSA-2026:43038
- https://access.redhat.com/errata/RHSA-2026:61627
- https://access.redhat.com/errata/RHSA-2026:61629
- https://access.redhat.com/security/cve/CVE-2026-48746
- https://bugzilla.redhat.com/show_bug.cgi?id=2491581
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48746.json
- https://x41-dsec.de/lab/advisories/x41-2026-002-starlette
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-48746