high8.1
CVE-2026-32257
Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework.
Impact
Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Prior to 1.2.13, custom CSS supplied through the Brand Settings Styles field by a backend user with the backend.manage_branding permission is compiled by the LESS parser and rendered without sanitization on every backend page, allowing stored cross-site scripting against backend users. This issue is fixed in version 1.2.13.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | winter/wn-backend-module | <= 1.2.12 | 1.2.13 |