{"id":"CVE-2025-49577","aliases":["GHSA-jwr7-992g-68mh"],"url":"https://o3.security/vulnerability/CVE-2025-49577","summary":"Citizen allows stored XSS in preference menu headings","details":"### Summary\nVarious preferences messages are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM.\n\n### Details\nThe `innerHtml` of the label div is set to the `textContent` of the label, essentially unsanitizing the system messages:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/407052e7069bdeae927d6f1a2a1c9a45b473bf9a/resources/skins.citizen.preferences/addPortlet.polyfill.js#L18\n\n\n### PoC\n1. Edit `citizen-feature-custom-font-size-name` (or any other message displayed in a heading in the preferences menu) to `<img src=\"\" onerror=\"alert('citizen-feature-custom-font-size-name')\">` (script tags don't work here due to the way the HTML is inserted)\n2. Open the preferences menu\n![image](https://github.com/user-attachments/assets/b75f100d-09cc-443c-b635-e9d6ab48d133)","published":"2025-06-12T18:45:18.415Z","modified":"2026-08-12T03:51:18.361011067Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"},"epss":{"score":0.00364,"percentile":0.29103,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"starcitizentools/citizen-skin","fixedVersion":"3.3.1"}],"fix":{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd","label":"StarCitizenTools/mediawiki-skins-Citizen@93c36ac"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49577.json"},{"type":"ADVISORY","url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-jwr7-992g-68mh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49577"},{"type":"FIX","url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd"},{"type":"FIX","url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/a741639085d70c22a9f49890542a142a223bf981"},{"type":"PACKAGE","url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:18.361011067Z"}}