---
id: CVE-2026-92220
title: A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0
summary: >-
  A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. Affected is the
  function
  MoRIIOConnectorScheduler.request_finished/MoRIIOConnectorWorker.get_finished/MoRIIOWrapper._handle_release_message
  of the file vllm/distributed/kv_tra…
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
  - CWE-404
  - CWE-770
vendor: vllm-project
product: vLLM
affected:
  - vLLM 0.26.0
  - vLLM 0.27.0
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:17:47.403'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92220'
references:
  - url: 'https://github.com/vllm-project/vllm/'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/pull/50674'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-92220'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/934149'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/404470'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/404470/cti'
    label: cna@vuldb.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92220.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-92220'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2534981'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-92220'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92220'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-16T19:39:59.954689Z'
scores:
  nvd: 5.3
  vendor: 7.5
  cna: 5.3
ingestedAt: '2026-09-16T02:48:25.630Z'
epss: 0.00701
epssPercentile: 0.51131
---

## Overview

A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. Affected is the function MoRIIOConnectorScheduler.request_finished/MoRIIOConnectorWorker.get_finished/MoRIIOWrapper._handle_release_message of the file vllm/distributed/kv_transfer/kv_connector/v1/moriio/moriio_connector.py of the component MoRIIO Acknowledgement Handler. Performing a manipulation of the argument request_id/kv_transfer_params results in resource consumption. It is possible to initiate the attack remotely. The project was informed of the problem early through a pull request but has not reacted yet.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92220.json)