Reverse tabnabbing allowing phishing attacks | AEM

Reverse tabnabbing allows phishing attacks by using the external links from AEM. For example, the links to the documentation from the "?" symbol.
Is it a serious threat and what to do to avoid that?

Answer

Reverse tabnabbing is out of the scope of AEM threat-model as it is a browser issue, which cannot be easily mitigated at the product level.
The following quote from Google security explains this issue:

Additional information

https://sites.google.com/site/bughunteruniversity/nonvuln/phishing-with-window-opener.