Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-48746

39
FAUCET Score

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.

First published: Jun 22, 2026Last modified: Jun 22, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.3.0, < 0.22.0CPE matchmatch criteria
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 49th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: vllmFixed in: 0.22.0

Vendor Advisories (1)

pipGHSA-94f4-hr76-p5j6critical

vLLM: OpenAI auth bypass

Jun 16, 2026

References

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 / security/cve/CVE-2026-48746
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-48746.json
github.com / vllm-project/vllm/pull/43426
Issue Tracking
github.com / vllm-project/vllm/security/advisories/GHSA-94f4-hr76-p5j6
Third Party Advisory
x41-dsec.de / lab/advisories/x41-2026-002-starlette
Third Party Advisory