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Winter: Stored XSS through cached Brand Settings and Editor Settings custom styles

🗓️ 20 Aug 2026 18:44:54Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 6 Views

Winter CMS caches unsanitized CSS allowing stored XSS on backend pages and auth pages.

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20 Aug 2026 18:44Current
5.5Medium risk
Vulners AI Score5.5
6