CVE-2026-11541

HIGH

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

Title source: cna
STIX 2.1

Description

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are affected by an HTTP request smuggling vulnerability.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
https://www.ibm.com/support/pages/node/7277550

Scores

CVSS v3 7.4
EPSS 0.0042
EPSS Percentile 33.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-444
Status published
Products (5)
IBM/WebSphere Application Server 8.5
IBM/WebSphere Application Server 9.0
IBM/WebSphere Application Server - Liberty 17.0.0.3 - 26.0.0.6
ibm/websphere_application_server 17.0.0.3 - 26.0.0.6
ibm/websphere_application_server 8.5.0.0 - 8.5.5.31
Published Jun 30, 2026
Tracked Since Jul 01, 2026