# CVE-2026-11712: IBM WebSphere Application Server XSS in administrative console help system

Source: https://junglewise.ai/threats/cve-2026-11712-ibm-websphere-application-server-xss-in-administrative-console  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-30. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2026-11712 · Severity: critical · CVSS 9.3 · Published 2026-06-30

IBM WebSphere Application Server, a platform used to host and manage enterprise Java applications, contains a security flaw in its administrative console's help system. An attacker could use this vulnerability to execute malicious scripts in the browser of an administrative user who clicks a specially crafted link. This could lead to unauthorized actions being performed with the administrator's privileges, potentially compromising the entire application server environment.

Technologies: [IBM WebSphere Application Server](https://junglewise.ai/threats/technologies/websphere-application-server). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-11712 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11712 being exploited in the wild.

**How severe is CVE-2026-11712?** Critical severity, with a CVSS score of 9.3, published 30 June 2026.

**Which products and versions are affected?** IBM WebSphere Application Server 9.0.0.0 through 9.0.5.28, 8.5.0.0 through 8.5.5.30.

**Is there a fix for CVE-2026-11712?** A patch was published on 2026-06-30. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-11712 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-11712?** Check whether you run IBM WebSphere Application Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

IBM WebSphere Application Server is vulnerable to a Cross-Site Scripting (XSS) attack (CWE-79) within the integrated help system of the administrative console. The vulnerability is caused by improper neutralization of user-supplied input during web page generation. A remote, unauthenticated attacker can exploit this by persuading a user (typically an administrator) to visit a malicious URL. Successful exploitation allows the attacker to execute arbitrary JavaScript in the context of the victim's session, potentially leading to session hijacking or unauthorized administrative actions. IBM has released interim fix PH71756 to address this issue.

## Affected products

- IBM WebSphere Application Server 9.0.0.0 through 9.0.5.28, 8.5.0.0 through 8.5.5.30

## Timeline

- 2026-06-30: disclosed
- 2026-06-30: advisory
- 2026-06-30: patched

## References

- [https://www.ibm.com/support/pages/node/7278590](https://www.ibm.com/support/pages/node/7278590)

## Related threats

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- [IBM WebSphere Application Server authorization bypass in authentication](https://junglewise.ai/threats/cve-2026-95680-ibm-websphere-application-server-8-5-and-9-0-could-allow-an)
- [IBM WebSphere Application Server authentication bypass in CSIv2](https://junglewise.ai/threats/cve-2026-93907-ibm-websphere-application-server-8-5-and-9-0-could-allow-a-remote)
- [IBM WebSphere Application Server denial of service via resource consumption](https://junglewise.ai/threats/cve-2026-103499-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)