CVE-2026-32258
High
Description
Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. From 1.2.10 through 1.2.12, authenticated backend users with the backend.manage_editor permission can store custom Markup Styles that are compiled by the LESS parser and rendered without sanitization on every backend page, allowing stored cross-site scripting. This issue is fixed in version 1.2.13.
SeverityHigh
CVSS8.1
Exploit probability—
ProductWinter/wn-backend-module
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- winter/wn-backend-module1.2.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| winter/wn-backend-modulePackagist | 1.2.10 ≤ v < 1.2.13 | 1.2.13 |
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