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0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
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CVE-2020-5809

Description

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.

POC

Reference

Github

No PoCs found on GitHub currently.

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