---
id: CVE-2026-11548
title: >-
  IBM WebSphere Application Server and WebSphere Application Server Liberty are
  affected by an HTTP request smuggling vulnerability.
summary: >-
  IBM WebSphere Application Server and WebSphere Application Server Liberty are
  affected by an HTTP request smuggling vulnerability.
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-444
vendor: IBM
product: CICS TX Advanced
affected:
  - cics_tx_advanced 10.1
published: '2026-09-18'
updated: '2026-09-19'
sourceUpdated: '2026-09-19T15:16:57.223'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11548'
references:
  - url: 'https://www.ibm.com/support/pages/node/7287740'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00229
epssPercentile: 0.13978
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-19T13:36:23.149331Z'
ingestedAt: '2026-09-18T19:49:30.603Z'
---

## Overview

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by an HTTP request smuggling vulnerability.

## Remediation

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