CVE-2026-11594

Analyzed Analyzed - Analysis Complete

XSS in IBM WebSphere Application Server

Publication date: 2026-06-30

Last updated on: 2026-07-02

Assigner: IBM Corporation

Description

IBM WebSphere Application Server 9.0, and 8.5 is affected by a cross-site scripting vulnerability in the administrative console.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-30

Last Modified

2026-07-02

Generated

2026-07-21

AI Q&A

2026-07-01

EPSS Evaluated

2026-07-19

NVD

CVE-2026-11594

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	websphere_application_server	From 8.5.0.0 (inc) to 8.5.5.30 (exc)
ibm	websphere_application_server	From 9.0.0.0 (inc) to 9.0.5.29 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a cross-site scripting (XSS) issue found in the administrative console of IBM WebSphere Application Server versions 9.0 and 8.5.

Impact Analysis

Exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the administrative console, potentially leading to unauthorized access or control over sensitive administrative functions.

Compliance Impact

The vulnerability is a cross-site scripting (XSS) flaw in the IBM WebSphere Application Server administrative console that can impact confidentiality and integrity of data.

Because it affects confidentiality and integrity, this vulnerability could potentially impact compliance with standards and regulations such as GDPR and HIPAA, which require protection of sensitive data and secure handling of information.

However, no specific information about compliance impact or regulatory considerations is provided in the available resources.

Mitigation Strategies

IBM recommends applying interim fixes or upgrading to fix packs 9.0.5.29 (or later) for WebSphere Application Server 9.0 and 8.5.5.30 (or later) for version 8.5 to mitigate this cross-site scripting vulnerability.

No workarounds are provided, so applying the recommended fixes or upgrades is the immediate step to reduce risk.

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