By default, CuteEditor for DNN Filters Images by Security Prefix.
For details about Filtering Images by Security Prefix, please check the following article:
If you want to disable this feature, please modify your DNN web.config file:
<add name="CEHtmlEditorProvider"
type="DotNetNuke.HtmlEditor.CEHtmlEditorProvider, DotNetNuke.CEHtmlEditorProvider"
providerPath="~\Providers\HtmlEditorProviders\CEHtmlEditorProvider\CuteSoft_Client\CuteEditor\"
UseDNNRoleASFileNamePrefix="false" Keep me posted
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