---
id: CVE-2026-9319
title: >-
  IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential
  remote code execution due to deserialization of untrusted data via JAX-WS
  endpoints with WS-Security.
summary: >-
  IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential
  remote code execution due to deserialization of untrusted data via JAX-WS
  endpoints with WS-Security.
severity: critical
cvss: 9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: ibm
product: websphere_application_server
affected:
  - 'websphere_application_server >= 8.5.0.0, < 8.5.5.30'
  - 'websphere_application_server >= 9.0.0.0, < 9.0.5.29'
patched:
  - websphere_application_server 9.0.5.29
published: '2026-06-01'
updated: '2026-07-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9319'
references:
  - url: 'https://www.ibm.com/support/pages/node/7274738'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00621
epssPercentile: 0.4748
ingestedAt: '2026-07-23T07:14:46.996Z'
---

## Overview

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential remote code execution due to deserialization of untrusted data via JAX-WS endpoints with WS-Security.

## Affected

- `websphere_application_server >= 8.5.0.0, < 8.5.5.30`
- `websphere_application_server >= 9.0.0.0, < 9.0.5.29`

## Remediation

Upgrade past the affected range:

- `websphere_application_server 9.0.5.29`