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ApostropheCMS: Stored XSS via CSS Custom Property Injection in @apostrophecms/color-field Escaping Style Tag Context

🗓️ 16 Apr 2026 20:42:37Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 3 Views

Color field bypasses validation for CSS custom properties starting with --, enabling stored XSS via style tags.

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16 Apr 2026 20:42Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.4
EPSS0.00014
SSVC
3