---
id: CVE-2026-9338
title: >-
  IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of
  service, caused by sending a specially-crafted request
summary: >-
  IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of
  service, caused by sending a specially-crafted request. A remote attacker
  could exploit this vulnerability to trigger excessive resource consumption,
  potentially …
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: ibm
product: websphere_application_server
affected:
  - 'websphere_application_server >= 8.5.0.0, < 8.5.5.31'
  - 'websphere_application_server >= 9.0.0.0, < 9.0.5.29'
patched:
  - websphere_application_server 9.0.5.29
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T18:14:23.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9338'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286610'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00289
epssPercentile: 0.21757
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-10T19:00:51.645148Z'
ingestedAt: '2026-09-11T16:45:48.026Z'
---

## Overview

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to trigger excessive resource consumption, potentially leading to reduced availability of the affected service.

## Affected

- `websphere_application_server >= 8.5.0.0, < 8.5.5.31`
- `websphere_application_server >= 9.0.0.0, < 9.0.5.29`

## Remediation

Upgrade past the affected range:

- `websphere_application_server 9.0.5.29`