---
id: CVE-2026-100648
title: >-
  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
summary: >-
  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 endpo…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-400
vendor: vllm-project
product: vllm
affected:
  - vllm < 0.29.0
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T14:16:47.240'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100648'
references:
  - url: >-
      https://github.com/vllm-project/vllm/security/advisories/GHSA-jcq2-4gch-5qhf
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/vllm-before-0.29.0-uncontrolled-resource-consumption-via-audio-decoding
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T13:33:20.921Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.