{"id":"GHSA-prmv-7r8c-794g","aliases":["CVE-2025-53370"],"title":"Citizen vulnerable to Stored XSS through short descriptions","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"HIGH","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:<img src=\"\" onerror=\"alert('citizen shortdescription xss')\">}}` 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executed.","severity":"high","score":8.6,"published":"2025-07-03T21:29:16.000Z","modified":"2025-07-03T22:27:20.020Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"starcitizentools/citizen-skin","sources":[{"name":"OSV · GHSA-prmv-7r8c-794g","url":"https://osv.dev/vulnerability/GHSA-prmv-7r8c-794g"}],"ranges":[{"events":[{"introduced":"1.9.4"},{"fixed":"3.4.0"}],"type":"ECOSYSTEM"}],"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"],"fixed":["3.4.0"]}],"sourceAffected":[],"references":["https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-prmv-7r8c-794g","https://nvd.nist.gov/vuln/detail/CVE-2025-53370","https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/aedbceb3380bb48db6b59e272fc187529c71c8ca","https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/c85a40bddc8651fff66df83a72debddcb34f0521","https://github.com/StarCitizenTools/mediawiki-skins-Citizen","https://github.com/StarCitizenTools/mediawiki-skins-Citizen/releases/tag/v3.4.0"],"sources":[{"name":"OSV","id":"GHSA-prmv-7r8c-794g","modified":"2025-07-03T22:27:20.020611Z","url":"https://osv.dev/vulnerability/GHSA-prmv-7r8c-794g"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","score":8.6}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T10:05:32.626Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}