---
id: CVE-2026-11381
title: >-
  IBM MQ could allow an authenticated attacker to cause a denial of service or
  potentially execute arbitrary code due to improper validation of message
  distribution list structures.
summary: >-
  IBM MQ could allow an authenticated attacker to cause a denial of service or
  potentially execute arbitrary code due to improper validation of message
  distribution list structures.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: IBM
product: MQ for HPE NonStop
affected:
  - mq_for_hpe_nonstop >= 8.1.0 <= 8.1.0.40
published: '2026-09-18'
updated: '2026-09-19'
sourceUpdated: '2026-09-19T04:17:53.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11381'
references:
  - url: 'https://www.ibm.com/support/pages/node/7287706'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-18T17:23:12.071837Z'
ingestedAt: '2026-09-18T16:45:41.382Z'
epss: 0.00328
epssPercentile: 0.23256
---

## Overview

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of message distribution list structures.

## Remediation

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