There is a new way to close the security breach, produced by internal and external links via the target="_blank" tag. please add to every link, which is generated by X5 the following tag: rel="noopener"

This will prevent the opened page, to make changes at the linked page. This is a very important feature, since even Google searches for this on webpages for it's SEO-Rank.

Wordpress had implemented it with the version 4.7.4

It is as well implementable on the following link: <input type="button" value="Google" onclick="window.open('https://www.google.com/','_blank','noopener').focus();">

Please add this tag as soon as possible, so we can ensure a safe browsing for our clients.

Many thanks in advance and I wish a happy new year to all!