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Vulnerability · Published Jun 12, 2025 · Assigned by GitHub_M

CVE-2025-49578Citizen allows stored XSS in user registration date message

Medium 6.5

In plain English

A medium-severity cross-site scripting in mediawiki-skins-Citizen from StarCitizenTools. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 63.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagiststarcitizentools/citizen-skin3.3.1GHSA-2v3v-3whp-953h

Affected products (as reported)

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

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References