CVE-2026-105443

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IBM WebSphere Liberty Server Isolation Flaw

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: IBM Corporation

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 has insufficient isolation between servers sharing an install.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-105443

EUVD

EUVD-2026-100492

Affected Vendors & Products

Vendor	Product	Version / Range
IBM	WebSphere	Application Server - Liberty 17.0.0.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.10 have insufficient isolation between servers sharing an install. This means that different server instances running on the same installation may not be properly separated, potentially allowing unauthorized access or interference between them.

Impact Analysis

This vulnerability could allow attackers to access sensitive data, perform unauthorized actions, or disrupt services by exploiting weak isolation between shared server instances. It may lead to data breaches or service disruptions if exploited.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection requirements or HIPAA's security rules. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Update IBM WebSphere Application Server - Liberty to version 26.0.0.11 or later to address the isolation issue between shared servers.

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