Is CVE-2026-82956 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-82956 being exploited in the wild.

How severe is CVE-2026-82956?

Informational severity, published 1 November 2026.

Which products and versions are affected?

Apache Wicket 8.0.0 through 8.19.0, 9.0.0 through 9.24.0, 10.0.0 through 10.11.0.

Is there a fix for CVE-2026-82956?

Yes: fixed in 8.20.0, 9.25.0, 10.12.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-82956 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-82956?

Check whether you run Apache Wicket 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.

CVE-2026-82956: Apache Wicket cross-site scripting in AjaxNewWindowNotifyingBehavior

CVE-2026-82956 · Severity: info · Published 2026-11-01

Apache Wicket is a Java web framework used to build dynamic web applications. When an application explicitly uses the AjaxNewWindowNotifyingBehavior component, an attacker can inject malicious JavaScript by setting a browser window name with a specially crafted value. This injected code executes in the application's security context every time the affected page is rendered, potentially allowing account takeover, session hijacking, or data theft.

Technologies: Apache Wicket. Vendors: Apache.

Quick answers

Is CVE-2026-82956 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-82956 being exploited in the wild.
How severe is CVE-2026-82956?: Informational severity, published 1 November 2026.
Which products and versions are affected?: Apache Wicket 8.0.0 through 8.19.0, 9.0.0 through 9.24.0, 10.0.0 through 10.11.0.
Is there a fix for CVE-2026-82956?: Yes: fixed in 8.20.0, 9.25.0, 10.12.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-82956 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-82956?: Check whether you run Apache Wicket 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.

How to fix

Fixed in: 8.20.0, 9.25.0, 10.12.0

Technical details

The vulnerability is an improper neutralization of input (CWE-79 stored XSS) in the AjaxNewWindowNotifyingBehavior component. The behaviour captures the browser's window.name parameter and stores it in the page's serialized state without validation. When the page is later rendered, the stored value is embedded directly into a JavaScript string literal without escaping, allowing an attacker-controlled window name containing a quote character to break out of the string and inject arbitrary JavaScript that runs with the application's origin privileges.

Affected products

Apache Wicket 8.0.0 through 8.19.0, 9.0.0 through 9.24.0, 10.0.0 through 10.11.0

Timeline

2026-11-01: disclosed
2026-11-01: patched

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