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GHSA-Q2J8-X8HF-63CH Grav: Single invalid UTF-8 byte disables every rule in Security::detectXss(), bypassing the page-content XSS safety gate

🗓️ 17 Sep 2026 20:44:39Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Invalid UTF-8 byte disables all detectXss() rules, bypassing Grav's XSS gate.

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17 Sep 2026 21:00Current
CVSS 45.1
CVSS 3.15.4
EPSS0.00182
4