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CVE-2026-59711 showdown - Cross-Site Scripting via Unescaped Metadata Title in completeHTMLDocument

🗓️ 06 Jul 2026 21:00:38Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

Showdown CVE-2026-59711 enables cross site scripting via unescaped metadata title when completeHTMLDocument is on, injecting HTML into the title tag.

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09 Jul 2026 03:51Current
6Medium risk
Vulners AI Score6
CVSS 45.3
EPSS0.00187
3