CVE•Published 2026-06-22•Modified 2026-09-01•1 article on news•6 live references•NVD data

CVE-2026-48746Vllm · Vllm

Vulnerability data via NVD (ingested)

CVSS v3.1

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 36% of all CVEs

Weaknesses (CWE)

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')CWE-501Trust Boundary Violation

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.

Timeline

Published 2026-06-22

Modified 2026-09-01

External references

NVD MITRE Exploit-DB Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-48746

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Vllm Vllm"

All exposed Vllm Vllm instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Vllm"

HTTP body or banner mentions "Vllm" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-48746