CVE-2026-487469.1CriticalCWE-444

CVE-2026-48746: vLLM: OpenAI auth bypass

vllm-project · vllm

Vendor fix available · Affected: vllm-project · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.1%probability of exploitation in the next 30 days

67th percentile

050100

Higher than 67% of scored CVEs

9.1CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

vllm-project · vllm>= 0.3.0, < 0.22.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Inconsistent Interpretation of HTTP Requests · Injection and Smuggling
Vendor: vllm-project
Published: June 2026
Band: Possible (1 to 10%), June 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-48746 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

4 more references are in the CVE record.