IBM WSA Liberty 17.0.0.326.0.0.4: NoAuth Identity Spoofing
CVE-2026-3621 Published on April 22, 2026

IBM WebSphere Application Server Liberty is affected by identity spoofing
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-3621 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

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

Weakness Type

Improper Privilege Management

The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.


Products Associated with CVE-2026-3621

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IBM Websphere Application Server Liberty
 

Affected Versions

IBM WebSphere Application Server - Liberty: