Cross-site scripting in IBM WebSphere Application Server - CVE-2026-11594
Published: June 24, 2026
Vulnerability identifier: #VU135127
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-11594
CWE-ID: CWE-79
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: IBM Corporation
Affected software:
IBM WebSphere Application Server
IBM WebSphere Application Server
Detailed vulnerability description
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.
How to mitigate CVE-2026-11594
Install updates from vendor's website.