CVE-2026-32257
Winter: Stored XSS through Brand Settings custom styles
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | wintercms |
| Product | winter |
| Published | Aug 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
wintercms / winter
< 1.2.13