GHSA-2v3v-3whp-953h
starcitizentools/citizen-skin allows stored XSS in user registration date message
Quick fix
GHSA-2v3v-3whp-953h — starcitizentools/citizen-skin: upgrade to the fixed version with the command below.
composer require starcitizentools/citizen-skin:^3.3.1Details
### 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 1. 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.
Are you affected?
Enter the version of the package you're using.
Affected packages
3.3.0Fixed in: 3.3.1composer require starcitizentools/citizen-skin:^3.3.1References
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-2v3v-3whp-953h[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2025-49578[ADVISORY]
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/64cb5d7ab3a6dc0381fae54b31e8fc4afadc8beb[WEB]
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd[WEB]
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen[PACKAGE]