CVE-2025-49578 – starcitizentools/citizen-skin

Package

Manager: composer
Name: starcitizentools/citizen-skin
Vulnerable Version: >=3.3.0 <3.3.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00039 pctl0.10926

Details

starcitizentools/citizen-skin allows stored XSS in user registration date message ### Summary 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. ### Details The result of `$this->lang->userDate( $timestamp, $this->user )` returns unescaped values, but is inserted as raw HTML by Citizen: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/072e4365e9084e4b153eac62d3666566c06f5a49/includes/Components/CitizenComponentUserInfo.php#L55-L60 ### PoC 1. Go to any page using citizen with the uselang parameter set to x-xss and while being logged in Depending on the registration date of the account you're logged in with, various messages can be shown. In my case, it's `november`: ![image](https://github.com/user-attachments/assets/252a3453-99c8-4ce1-b6d6-a8485b7a9a43) ### Impact This impacts wikis where a group has the `editinterface` but not the `editsitejs` user right.

Metadata

Created: 2025-06-13T14:09:00Z
Modified: 2025-06-13T14:09:00Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-2v3v-3whp-953h/GHSA-2v3v-3whp-953h.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-2v3v-3whp-953h
Finding: F425
Auto approve: 1