{"id":"CVE-2025-53370","aliases":["EUVD-2025-19907","GHSA-prmv-7r8c-794g"],"status":"published","title":"Citizen stored XSS vulnerability through short descriptions","description":"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.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00386,"percentile":0.32993,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2025-07-03T19:45:32Z","modified":"2026-10-28T02:31:00Z","fixes":[{"ecosystem":"Packagist","package":"starcitizentools/citizen-skin","fixed_in":["3.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"starcitizentools/citizen-skin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.9.4"},{"fixed":"3.4.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"starcitizentools/citizen-skin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.9.4"},{"fixed":"3.4.0"}]}],"versions":["v1.10.0","v1.13.0","v1.14.0","v1.14.1","v1.15.0","v1.16.0","v1.16.1","v1.17.0","v1.17.1","v1.17.2","v1.17.3","v1.17.4","v1.17.5","v1.17.6","v1.17.7","v1.17.8","v1.17.9","v1.9.4","v1.9.5","v2.0.0","v2.0.0-alpha.0","v2.0.0-alpha.1","v2.0.0-alpha.2","v2.0.0-beta.0","v2.0.0-beta.1","v2.0.0-beta.2","v2.0.0-beta.3","v2.0.0-beta.4","v2.0.1","v2.1.0","v2.10.0","v2.10.1","v2.11.0","v2.11.1","v2.12.0","v2.13.0","v2.13.1","v2.13.2","v2.13.3","v2.13.4","v2.13.5","v2.14.0","v2.14.1","v2.15.0","v2.15.1","v2.16.0","v2.16.1","v2.17.0","v2.17.1","v2.17.2","v2.18.0","v2.18.1","v2.19.0","v2.2.0","v2.20.0","v2.21.0","v2.22.0","v2.22.1","v2.23.0","v2.24.0","v2.25.0","v2.26.0","v2.27.0","v2.28.0","v2.29.0","v2.3.0","v2.3.1","v2.3.2","v2.3.3","v2.3.4","v2.3.5","v2.3.6","v2.30.0","v2.31.0","v2.32.0","v2.33.0","v2.34.0","v2.35.0","v2.36.0","v2.37.0","v2.38.0","v2.38.1","v2.38.2","v2.38.3","v2.39.0","v2.39.1","v2.39.2","v2.39.3","v2.39.4","v2.4.0","v2.4.1","v2.4.2","v2.4.3","v2.4.4","v2.40.0","v2.40.1","v2.40.2","v2.5.0","v2.5.1","v2.5.2","v2.6.0","v2.6.1","v2.6.2","v2.6.3","v2.6.4","v2.6.5","v2.6.6","v2.7.0","v2.7.1","v2.7.10","v2.7.11","v2.7.2","v2.7.3","v2.7.4","v2.7.5","v2.7.6","v2.7.7","v2.7.8","v2.7.9","v2.8.0","v2.8.1","v2.8.2","v2.8.3","v2.8.4","v2.8.5","v2.9.0","v2.9.1","v3.0.0","v3.1.0","v3.2.0","v3.3.0","v3.3.1","v3.3.2"]}],"products":[{"vendor":"starcitizen.tools","product":"citizen"},{"vendor":"starcitizentools","product":"mediawiki-skins-citizen"}],"references":[{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-prmv-7r8c-794g","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/c85a40bddc8651fff66df83a72debddcb34f0521","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/releases/tag/v3.4.0","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/aedbceb3380bb48db6b59e272fc187529c71c8ca","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53370","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-prmv-7r8c-794g"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53370.json","tags":["advisory"]},{"url":"https://github.com/StarCitizenTools/mediawiki-skins-Citizen","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-53370","title":"Citizen stored XSS vulnerability through short descriptions","description":"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.","status":"published","published":"2025-07-03T19:45:32.163Z","modified":"2025-07-07T19:01:01.183Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:48.853452Z"}],"euvd":[{"id":"EUVD-2025-19907","description":"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.","status":"published","published":"2025-07-03T19:45:32Z","modified":"2025-07-07T19:01:01Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T20:32:13.001759Z"}],"ghsa":[{"id":"GHSA-prmv-7r8c-794g","title":"Citizen vulnerable to Stored XSS through short descriptions","description":"### Summary\nShort descriptions set via the [ShortDescription extension](https://www.mediawiki.org/wiki/Extension:ShortDescription) are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page.\n\n### Details\nThe `shortdesc` property, which contains unsanitized user input, is retrieved from the OutputPage and returned as the tagline:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L249-L251\nThe tagline is then provided to the template data:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L270-L275\nThe template then inserts the tagline into raw HTML without doing any escaping:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/templates/PageHeading.mustache#L12\n\n### PoC\n1. Enable Citizen and ShortDescription\n2. Add `{{SHORTDESC:\u0026lt;img src=\"\" onerror=\"alert('citizen shortdescription xss')\"\u0026gt;}}` to a page\n3. Visit the page\n![image](https://github.com/user-attachments/assets/d45f3626-c5eb-4477-86af-d15d3a1edb96)\n![image](https://github.com/user-attachments/assets/84a8c447-d441-4bd6-b6d6-48e504527c4e)\n\n\n### Impact\nArbitrary HTML can be inserted into the DOM by any user, allowing for JavaScript to be executed.","status":"published","published":"2025-07-03T21:29:16Z","modified":"2025-07-03T21:53:11Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:48.783737Z"}],"nvd":[{"id":"CVE-2025-53370","description":"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.","status":"published","published":"2025-07-03T20:15:23.893Z","modified":"2026-06-17T09:38:06.49Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:11:15.754475Z"}],"osv":[{"id":"CVE-2025-53370","title":"Citizen stored XSS vulnerability through short descriptions","description":"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.","status":"published","published":"2025-07-03T19:45:32.163Z","modified":"2026-10-28T02:31:00.73620356Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:50.45326Z"},{"id":"GHSA-prmv-7r8c-794g","title":"Citizen vulnerable to Stored XSS through short descriptions","description":"### Summary\nShort descriptions set via the [ShortDescription extension](https://www.mediawiki.org/wiki/Extension:ShortDescription) are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page.\n\n### Details\nThe `shortdesc` property, which contains unsanitized user input, is retrieved from the OutputPage and returned as the tagline:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L249-L251\nThe tagline is then provided to the template data:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L270-L275\nThe template then inserts the tagline into raw HTML without doing any escaping:\nhttps://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/templates/PageHeading.mustache#L12\n\n### PoC\n1. Enable Citizen and ShortDescription\n2. Add `{{SHORTDESC:\u0026lt;img src=\"\" onerror=\"alert('citizen shortdescription xss')\"\u0026gt;}}` to a page\n3. Visit the page\n![image](https://github.com/user-attachments/assets/d45f3626-c5eb-4477-86af-d15d3a1edb96)\n![image](https://github.com/user-attachments/assets/84a8c447-d441-4bd6-b6d6-48e504527c4e)\n\n\n### Impact\nArbitrary HTML can be inserted into the DOM by any user, allowing for JavaScript to be executed.","status":"published","published":"2025-07-03T21:29:16Z","modified":"2025-07-03T22:27:20.020611Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:53.700556Z"}]}}