starcitizentools/citizen-skin allows stored XSS in user registration date message
SummaryVarious date messages returned by `Language::userDate` are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM.DetailsThe result of `$this->lang->userDate( $timestamp, $this->user )` returns unescaped values, but is inserted as raw HTML by Citizen:
https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/includes/Components/CitizenComponentUserInfo.php#L55-L60PoCGo to any page using citizen with the uselang parameter set to x-xss and while being logged in
Depending on the registration date of the account you're logged in with, various messages can be shown. In my case, it's `november`:
![image](https://github.com/user-attachments/assets/252a3453-99c8-4ce1-b6d6-a8485b7a9a43)ImpactThis impacts wikis where a group has the `editinterface` but not the `editsitejs` user right.