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Unknown
CVE-2020-5809
Disclosure Date: December 30, 2020 (last updated February 22, 2025)
A stored XSS vulnerability exists in Umbraco CMS <= 8.9.1 or current. An authenticated user can inject arbitrary JavaScript code into iframes when editing content using the TinyMCE rich-text editor, as TinyMCE is configured to allow iframes by default in Umbraco CMS.
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