GHSA-PFM2-MQWJ-GGM5 MediaWiki makeCollapsible allows applying event handler to any CSS selector

In MediaWiki before 1.34.1, users can add various Cascading Style Sheets CSS classes which can affect what content is shown or hidden in the user interface to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler ...

MediaWiki makeCollapsible allows applying event handler to any CSS selector

In MediaWiki before 1.34.1, users can add various Cascading Style Sheets CSS classes which can affect what content is shown or hidden in the user interface to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler ...

makeCollapsible allows applying event handler to any CSS selector

More info at https://phabricator.wikimedia.org/T246602...