CVE-2025-53368: Citizen is vulnerable to stored XSS attack in the legacy search bar

Description

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, page descriptions are inserted into raw HTML without proper sanitization by the Citizen skin when using the old search bar. Any user with page editing privileges can insert cross-site scripting (XSS) payloads into the DOM for other users who are searching for specific pages. This issue has been patched in version 3.4.0.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

Required

Confidentiality

Low

Integrity

Low

Availability

None

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 28% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

ME

mediawiki-skins-Citizen · StarCitizenTools

>= 1.9.4, < 3.4.0; >= b2bd79196db1153d0bc1bd51a646d957cbdf4aec, < aedbceb3380bb48db6b59e272fc187529c71c8ca · source: vendor

CI

Citizen · Starcitizen.tools

1.9.4 before 3.4.0 · source: NVD