GitHub Advisoryadvisory · Packagist

GHSA-g3cp-pq72-hjpv starcitizentools/citizen-skin allows stored XSS in menu heading message

MEDIUM Published 2025-06-13 Modified 2025-06-13 Official page ↗
Aliases
CVE-2025-49579
Ecosystem
Packagist
Packages
starcitizentools/citizen-skin
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-79
Reviewed
2025-06-13

Affected packages

• Packagist starcitizentools/citizen-skin: >= 2.4.2, < 3.3.1 → fixed in 3.3.1

Description

Summary All system messages in menu headings using the Menu.mustache template are inserted as raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM. Details The system messages for menu headings are inserted unescaped into raw HTML: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/templates/Menu.mustache#L8-L10 PoC 1. Go to any article using citizen with the `uselang` parameter set to `x-xss` 2. A large number of alerts will be shown for various messages, e.g.: On the main page of my test wiki, the following messages were shown: `navigation`, `notifications`, `user-interface-preferences`, `personaltools`, `variants`, `views`, `associated-pages`, `cactions` and `toolbox`. Impact This impacts wikis where a group has the `editinterface` but not the `editsitejs` user right.

Related

Alias · CVE (1)

  • CVE-2025-49579 Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. vulnerability

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References