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OpenAdvisories
Medium · 6.5 CVE-2025-49578 EUVD-2025-18205GHSA-2v3v-3whp-953h

Citizen allows stored XSS in user registration date message

Published Jun 12, 2025 · Updated Jun 12, 2025 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
StarCitizenTools mediawiki-skins-Citizen >= 64cb5d7ab3a6dc0381fae54b31e8fc4afadc8beb, < 93c36ac778397e0e7c46cf7adb1e5d848265f1bd, >= 3.3.0, < 3.3.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist starcitizentools/citizen-skin >= 3.3.0, < 3.3.1 3.3.1 GHSA-2v3v-3whp-953h

Advisories 1

References