Citizen vulnerable to Stored XSS through short descriptions
Summary
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.
Details
The shortdesc property, which contains unsanitized user input, is retrieved from the OutputPage and returned as the tagline:
https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L249-L251
The tagline is then provided to the template data:
https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/includes/Components/CitizenComponentPageHeading.php#L270-L275
The template then inserts the tagline into raw HTML without doing any escaping:
https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/0d8a44011e02a081618359a1e90f462478e807aa/templates/PageHeading.mustache#L12
PoC
- Enable Citizen and ShortDescription
- Add
{{SHORTDESC:<img src="" onerror="alert('citizen shortdescription xss')">}}to a page - Visit the page
Impact
Arbitrary HTML can be inserted into the DOM by any user, allowing for JavaScript to be executed.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | starcitizentools/citizen-skin | >= 1.9.4, < 3.4.0 | 3.4.0 |
Referencias
- 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
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
starcitizentools/citizen-skin- Publicada
- 03.07.2025
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-prmv-7r8c-794g - CC BY 4.0
Historial de vulnerabilidades: starcitizentools/citizen-skin
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 9
- Primera → última
- 09.2024 10.2025
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 2
- Media 7
Divulgaciones por año
- 2024: 1
- 2025: 8
- 2026: 0
-
Citizen vulnerable to Stored XSS through short descriptions esta entrada
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