GitStock

starcitizentools/mediawiki-skins-citizen · Security

starcitizentools/citizen-skin allows stored XSS in search no result messages

GHSA ID
GHSA-86xf-2mgp-gv3g
CVE ID
CVE-2025-49576
Severity
medium
Published
Updated
CVSS
6.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CVSS v3
6.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Description

Summary

The citizen-search-noresults-title and citizen-search-noresults-desc system messages are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM.

Details

The system messages are inserted as raw HTML by the mustache template: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/407052e7069bdeae927d6f1a2a1c9a45b473bf9a/resources/skins.citizen.search/templates/TypeaheadPlaceholder.mustache#L8-L9

PoC

  1. Edit citizen-search-noresults-title and citizen-search-noresults-desc to <img src="" onerror="alert('citizen-search-noresults-title')"> and <img src="" onerror="alert('citizen-search-noresults-desc')"> (script tags don't work here due to the way the HTML is inserted)
  2. Open the search bar and search for a page that doesn't exist to get the "no results" messages to show up

image image

Impact

This impacts wikis where a group has the editinterface but not the editsitejs user right.

CWEs

  • CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

Open GitHub