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Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

🗓️ 29 Apr 2026 21:51:13Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Unauthenticated reflected XSS in Admidio via system/msg_window.php where square brackets convert to HTML tags, with no CSP.

Related
Detection
Refs

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08 May 2026 20:13Current
6Medium risk
Vulners AI Score6
CVSS 3.16.1
EPSS0.0006
SSVC
4