---
id: CVE-2026-114050
title: vLLM before 0.31.0 Remote Engine Crash via Forged Multimodal UUID
summary: >-
  vLLM before 0.31.0 uses a client-supplied multimodal uuid verbatim as cache
  identity with no consistency check on cache hits, allowing engine crashes.
  Unauthenticated attackers can desynchronize the P0/P1 processor caches to
  trigger a fa…
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-345
vendor: vllm-project
product: vllm
affected:
  - vllm < 0.31.0
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T00:36:27.641Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114050'
references:
  - url: >-
      https://github.com/vllm-project/vllm/security/advisories/GHSA-p92p-rxj5-7p2x
    label: GitHub Security Advisory (GHSA-p92p-rxj5-7p2x)
  - url: >-
      https://www.vulncheck.com/advisories/vllm-before-0.31.0-remote-engine-crash-via-forged-multimodal-uuid
    label: >-
      VulnCheck Advisory: vLLM before 0.31.0 Remote Engine Crash via Forged
      Multimodal UUID
tags:
  - cve.org
ingestedAt: '2026-10-21T01:37:08.043Z'
---

## Overview

vLLM before 0.31.0 uses a client-supplied multimodal uuid verbatim as cache identity with no consistency check on cache hits, allowing engine crashes. Unauthenticated attackers can desynchronize the P0/P1 processor caches to trigger a fatal token-placeholder mismatch, killing the entire serving instance until restarted.

## Affected

- `vllm < 0.31.0`

## Remediation

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