IBM WAS Lib Virt. Host Bypass
CVE-2026-11549 Published on September 18, 2026

Multiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced.
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-11549 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

What is an Authorization Vulnerability?

The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

CVE-2026-11549 has been classified to as an Authorization vulnerability or weakness.


Products Associated with CVE-2026-11549

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IBM Cics Tx Advanced
 

Affected Versions

IBM CICS TX Advanced Version 10.1 is affected by CVE-2026-11549