CVE-2026-32257: high-severity vulnerability in wintercms winter
Winter: Stored XSS through Brand Settings custom styles
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
Affected products
wintercms · winterRelated CVEs — wintercms winter
In the same product, most dangerous first.
CVE-2023-52085LOWWinter CMS Local File Inclusion through Server Side Template Injection EPSS 30.2%CVE-2023-37269LOWWinter CMS vulnerable to stored XSS through privileged upload of SVG fileEPSS 2.7%CVE-2022-39357HIGHWinter vulnerable to Prototype Pollution in Snowboard frameworkEPSS 1.4%CVE-2026-79774CRITICALWinter CMS before 1.2.13 Twig Sandbox Escape via SecurityPolicyEPSS 0.8%CVE-2026-27591CRITICALWinter: Privilege escalation by authenticated backend usersEPSS 0.8%CVE-2026-63179MEDIUMWinter: Local File Inclusion through @import directives in LESS compilation of backend customizable stylesheets and theme assetsEPSS 0.5%