CVE-2026-11594 IBM WebSphere Application Server is affected by multiple cross-site scripting vulnerabilities

High 8.5 Published 30 Jun 2026 Updated 1 Jul 2026

Attackers can inject malicious scripts into the administrative console, potentially leading to session hijacking or code execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-11594?

CVE-2026-11594 is a high-severity cross-site scripting vulnerability in Ibm Websphere Application Server, published on 30 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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

Weakness: CWE-79

Which versions are affected by CVE-2026-11594?

It affects 1 product.

Products include Ibm Websphere Application Server.

How do I fix CVE-2026-11594?

No fix has been published for CVE-2026-11594 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-11594 being exploited?

There is no known exploitation of CVE-2026-11594 in the wild and no public exploit code.

All Ibm Websphere Application Server vulnerabilities

Sources

Also known as GHSA-ggxw-vx9j-j3mp.