← Back to CVE List
CVE-2026-48746NVD
Vulnerability Summary
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.
CVSS v3.1 Base Metrics
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
External 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/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