Cross-site Scripting in ShortDescription extension
CVE-2022-21710

4.7MEDIUM

Key Information:

Vendor: Starcitizentools
Status: Mediawiki-extensions-shortdescription
Vendor: CVE Published:; 24 January 2022

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What is CVE-2022-21710?

ShortDescription is a MediaWiki extension that provides local short description support. A cross-site scripting (XSS) vulnerability exists in versions prior to 2.3.4. On a wiki that has the ShortDescription enabled, XSS can be triggered on any page or the page with the action=info parameter, which displays the shortdesc property. This is achieved using the wikitext {{SHORTDESC:<img src=x onerror=alert()>}}. This issue has a patch in version 2.3.4.