---
id: CVE-2026-116179
title: >-
  vLLM 0.18.0 before 0.31.0 Memory Exhaustion via media_io_kwargs num_frames
  Override
summary: >-
  vLLM from 0.18.0 before 0.31.0 contains a resource exhaustion vulnerability
  that allows API clients to bypass the video/jpeg frame-count cap by overriding
  num_frames through media_io_kwargs. Attackers can set num_frames to -1 with a
  larg…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-770
vendor: vllm-project
product: vllm
affected:
  - vllm >= 0.18.0 < 0.31.0
published: '2026-10-25'
updated: '2026-10-25'
sourceUpdated: '2026-10-25T13:20:18.520Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116179'
references:
  - url: >-
      https://github.com/vllm-project/vllm/security/advisories/GHSA-4m6g-h9mv-wqjc
    label: GitHub Security Advisory (GHSA-4m6g-h9mv-wqjc)
  - url: >-
      https://www.vulncheck.com/advisories/vllm-0.18.0-before-0.31.0-memory-exhaustion-via-media-io-kwargs-num-frames-override
    label: >-
      VulnCheck Advisory: vLLM 0.18.0 before 0.31.0 Memory Exhaustion via
      media_io_kwargs num_frames Override
tags:
  - cve.org
ingestedAt: '2026-10-25T22:08:29.946Z'
---

## Overview

vLLM from 0.18.0 before 0.31.0 contains a resource exhaustion vulnerability that allows API clients to bypass the video/jpeg frame-count cap by overriding num_frames through media_io_kwargs. Attackers can set num_frames to -1 with a large inline video so VideoMediaIO.load_base64 decodes every frame, exhausting memory and crashing the API frontend.

## Affected

- `vllm >= 0.18.0 < 0.31.0`

## Remediation

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