CVE-2026-32257

8.1 highEPSS 0.4%

High (8.1). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-08-26
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://github.com/wintercms/winter/commit/d28f0b9474af79cfaa80eeb9d691f7a7c4469720
https://github.com/wintercms/winter/security/advisories/GHSA-v7cf-8gh9-gxmj

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