Winter CMS has Stored Cross-site Scripting (XSS) in Asset Manager
Impact
Affected versions of Winter CMS allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization.
To actively exploit this security issue, an attacker would need access to the Backend with a user account with the following permission: cms.manage_assets
The Winter CMS maintainers strongly recommend that the cms.manage_assets permission only be reserved to trusted administrators and developers in general.
Patches
Sanitization of SVG assets is now applied automatically when uploading through the CMS Asset Manager.
This security issue has been fixed as of https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65.
Workarounds
If users cannot upgrade, they may apply commit https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65 to their Winter CMS installation manually to resolve this issue.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | winter/wn-cms-module | < 1.2.10 | 1.2.10 |
Referencias
- https://github.com/wintercms/winter/security/advisories/GHSA-m7gw-rffq-rxjm
- https://nvd.nist.gov/vuln/detail/CVE-2026-22254
- https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65
- https://github.com/wintercms/winter
- https://github.com/wintercms/winter/releases/tag/v1.2.10
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
winter/wn-cms-module- Publicada
- 04.02.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-m7gw-rffq-rxjm - CC BY 4.0
Historial de vulnerabilidades: winter/wn-cms-module
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
- 3
- Primera → última
- 12.2024 08.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 1
- Media 1
- Baja 1
Divulgaciones por año
- 2024: 1
- 2025: 0
- 2026: 2
-
Winter CMS has Stored Cross-site Scripting (XSS) in Asset Manager esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.