What is CVE-2026-100648?

CVE-2026-100648 is a medium-severity vulnerability in Vllm-Project Vllm, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-09-26.

How severe is CVE-2026-100648?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Vllm-Project Vllm

CVE-2026-100648

vllm before 0.29.0 fails to enforce VLLM_MAX_AUDIO_CLIP_FILESIZE_MB limit in multimodal chat audio decoding, allowing unauthenticated clients to bypass file size restrictions. Attackers can submit oversized audio files through chat endpoints to consume excessive memory and CPU resources during decoding.

Vulnerability class: DoS (Denial of Service)

Published 2026-09-26.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Vllm-Project Vllm

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/vllm-project/vllm/security/advisories/GHSA-jcq2-4gch-5qhf (vendor-advisory)
www.vulncheck.com/advisories/vllm-before-0.29.0-uncontrolled-resource-consumpti… (third-party-advisory)

Frequently asked questions

What is CVE-2026-100648?: CVE-2026-100648 is a medium-severity vulnerability in Vllm-Project Vllm, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-09-26.
How severe is CVE-2026-100648?: Medium severity. CVSS v3 base score is 5.3 out of 10.