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

https://notcve.org/view.php?id=CVE-2022-21710

24 Jan 2022 — 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. • https://github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/commit/7c86644158388620c6c858258cc4e1a8de6e48ea • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •