Citizen vulnerable to Stored XSS through short descriptions

TRUNG BÌNH 5.4CVE-2025-53370 · GHSA-prmv-7r8c-794g · Công bố 03/07/2025 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2025-53370 là lỗ hổng mức TRUNG BÌNH (CVSS 5.4) ảnh hưởng starcitizentools/citizen-skin, citizen (starcitizen.tools).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.38%, cao hơn 31.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.4.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
starcitizentools/citizen-skin Packagist	`≥ 1.9.4, < 3.4.0`	`3.4.0`
citizen starcitizen.tools	`≥ 1.9.4, < 3.4.0`	`3.4.0`

Mô tả

Summary

Short descriptions set via the ShortDescription extension are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page.

Details

The shortdesc property, which contains unsanitized user input, is retrieved from the OutputPage and returned as the tagline: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L249-L251 The tagline is then provided to the template data: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L270-L275 The template then inserts the tagline into raw HTML without doing any escaping: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/templates/PageHeading.mustache#L12

PoC

Enable Citizen and ShortDescription
Add {{SHORTDESC:<img src="" onerror="alert('citizen shortdescription xss')">}} to a page
Visit the page

Impact

Arbitrary HTML can be inserted into the DOM by any user, allowing for JavaScript to be executed.

Mô tả của NVD

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, short descriptions set via the ShortDescription extension are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page. This issue has been patched in version 3.4.0.