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CVE-2026-32257

CVE-2026-32257 · Winter: Stored XSS through Brand Settings custom styles

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 8.1 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • winter

    Versions
    • < 1.2.13: Affected

    No fix published

  • winter/wn-backend-module Packagist

    Versions
    • v1.0.473
    • v1.0.474
    • v1.0.475
    • v1.1.10
    • v1.1.11
    • v1.1.2
    • v1.1.3
    • v1.1.4
    • v1.1.5
    • v1.1.6
    • v1.1.7
    • v1.1.8
    • v1.1.9
    • v1.2.0
    • v1.2.1
    • v1.2.10
    • v1.2.11
    • v1.2.12
    • v1.2.2
    • v1.2.3
    • v1.2.4
    • v1.2.5
    • v1.2.6
    • v1.2.7
    • v1.2.8
    • v1.2.9
    Affected ranges
    • ECOSYSTEM: < 1.2.13

    Update to 1.2.13

Original sources

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