Medium [CVE-2026-82705] Missing authorization in Apache Wicket
This medium-severity Apache Software Foundation advisory covers CVE-2026-82705 affecting Apache Wicket.
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Summary
Missing authorization in Apache Wicket.
ResourceRequestHandler, the handler that serves a resource reached through a mounted or shared ResourceReference. Components that are handed an org.apache.wicket.request.resource.IResource instance instead call IResource#respond() themselves from their own request listener and never construct that handler.
In wicket-core these are org.apache.wicket.markup.html.link. ResourceLink, org.apache.wicket.markup.html.image.
ImageButton; in wicket-extensions it is org.apache.wicket.extensions.ajax. AjaxDownloadBehavior.
A resource restricted by a custom isResourceAuthorized() implementation, or by an @AuthorizeResource annotation from wicket-auth-roles, is therefore enforced when it is requested through its own resource URL and is not enforced when the same instance is served through the component that holds it.
Which of the two happens is decided by the constructor the application used, and not by anything the application can see in the rendered page. ResourceLink(String, ResourceReference) renders a resource URL and the request is authorized; ResourceLink(String, IResource) renders a component listener URL and it is not.
- 8.0.0 through 8.19.0
- 9.0.0 through 9.24.0
- 10.0.0 through 10.11.0.
- through 10.11.0
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- 8.20.0
- 9.25.0
- 10.12.0
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
- Users are recommended to upgrade to version 8.20.0, 9.25.0 or 10.12.0, which fix the issue.
- An application that does not restrict resources at all is not affected, and neither is a resource that is only mounted or registered as a shared resource.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
More Apache Software Foundation advisories
- CVE-2026-111089Nov 1, 2026Apache Wicket reads texts from the application's resource bundles — a localized label
- CVE-2026-95863Nov 1, 2026Apache Wicket cross-site scripting (XSS)
- CVE-2026-87718Nov 1, 2026Apache Wicket 10.10.0, 10.11.0 and 9.24.0 do not set the Content-Security-Policy headers
- CVE-2026-84231Nov 1, 2026Apache Wicket cross-site scripting (XSS)
- CVE-2026-84177Nov 1, 2026Incorrect behavior order in Apache Wicket: a file path is validated before the framework
- CVE-2026-84172Nov 1, 2026Files accessible to external parties in Apache Wicket
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