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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0208
Identity Spoofing Vulnerability in IBM WebSphere Application Server Liberty

Original Issue Date:April 29, 2026

Severity Rating: HIGH

Software Affected

  • IBM WebSphere Application Server Liberty 17.0.0.3 and 26.0.0.4

Overview

A vulnerability has been reported in IBM WebSphere Application Server Liberty could allow a remote attacker to perform identity spoofing on the targeted system.

Target Audience:
 All end-users and organisations using IBM WebSphere Application Server Liberty.

Risk Assessment:
 High risk of unauthorised access.

Impact Assessment:
 Potential impact on confidentiality, integrity, availability of the system and application outages.

Description

IBM WebSphere Application Server Liberty is a lightweight, modular application server designed for developing and running Java and Jakarta EE applications, enabling efficient execution of enterprise applications.

A vulnerability exists in IBM WebSphere Application Server Liberty that leads to an identity spoofing issue when the appSecurity feature is not enabled and applications are deployed without proper authentication and authorization. This allows a remote attacker to impersonate a legitimate user and gain unauthorized access.

Solution

Apply appropriate updates as mentioned by the IBMs portal:
https://www.ibm.com/support/pages/node/7270437

Vendor Information
IBM
https://www.ibm.com/mysupport/s/?language=en_US

References

https://www.ibm.com/support/pages/node/7270437

CVE Name

CVE-2026-3621

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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