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Duplicate Advisory: Grav: Single invalid UTF-8 byte disables every rule in Security::detectXss(), bypassing the page-content XSS safety gate

🗓️ 18 Aug 2026 12:31:22Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 5 Views

Authenticated stored XSS in Grav before 2.0.14 via invalid UTF-8 byte bypassing detectXss().

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17 Sep 2026 20:56Current
CVSS 45.1
CVSS 3.15.4
EPSS0.00182
5