---
id: CVE-2026-11538
title: >-
  IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection
  vulnerability through crafted LTPA token cookies.
summary: >-
  IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection
  vulnerability through crafted LTPA token cookies.
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-117
vendor: ibm
product: websphere_application_server
affected:
  - 'websphere_application_server >= 8.5, < 8.5.5.31'
  - 'websphere_application_server >= 9.0, < 9.0.5.29'
patched:
  - websphere_application_server 9.0.5.29
published: '2026-09-18'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T15:58:10.653'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11538'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286610'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00163
epssPercentile: 0.04897
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T19:46:40.279251Z'
ingestedAt: '2026-09-18T19:49:30.581Z'
---

## Overview

IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection vulnerability through crafted LTPA token cookies.

## Affected

- `websphere_application_server >= 8.5, < 8.5.5.31`
- `websphere_application_server >= 9.0, < 9.0.5.29`

## Remediation

Upgrade past the affected range:

- `websphere_application_server 9.0.5.29`