Cross-site scripting in IBM WebSphere Application Server - CVE-2026-11594

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Main Vulnerability Database Vulnerabilities #VU135127

Cross-site scripting in IBM WebSphere Application Server - CVE-2026-11594

Published: June 24, 2026


Vulnerability identifier: #VU135127
CSH Severity: Low
CVSS v4: 6.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N]
CVE-ID: CVE-2026-11594
CWE-ID: CWE-79
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The disclosed vulnerability allows an adjacent attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. An adjacent attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Affected software

IBM WebSphere Application Server
IBM Business Automation Workflow
IBM Tivoli System Automation Application Manager
WebSphere Service Registry and Repository
WebSphere Remote Server
Enterprise Application Runtimes
Cloud Pak for Applications
WebSphere Hybrid Edition
IBM Tivoli Netcool Configuration Manager
Tivoli Composite Application Manager for Application Diagnostics

How to mitigate CVE-2026-11594

Install updates from vendor's website.

IBM WebSphere Application Server - addressed in versions 8.5.5.30, 9.0.5.29

External References

Related Security Bulletins