Описание
starcitizentools/citizen-skin allows stored XSS in user registration date message
Summary
Various 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.
Details
The 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-L60
PoC
- Go 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:
Impact
This impacts wikis where a group has the editinterface but not the editsitejs user right.
Ссылки
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-2v3v-3whp-953h
- https://nvd.nist.gov/vuln/detail/CVE-2025-49578
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/64cb5d7ab3a6dc0381fae54b31e8fc4afadc8beb
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd
Пакеты
starcitizentools/citizen-skin
>= 3.3.0, < 3.3.1
3.3.1
Связанные уязвимости
Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. Various 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. This impacts wikis where a group has the `editinterface` but not the `editsitejs` user right. This vulnerability is fixed in 3.3.1.