Feature: #78488 - Add rel="noreferrer" to external links
See forge#78488
Description
All links processed by typolink
with external links opening in a new window have been extended to contain
rel="noreferrer"
.
Links opening in a new window are defined as those having an attribute target
which is either not empty,
_self
, _top
or _parent
.
Note
Initially this feature added rel="noopener noreferrer
. However noreferrer
also
implies the property noopener
. Therefore, the latter was removed.
Impact
This property improves the security of the site:
noreferrer
- This property prevents the browser, when navigating to another page, to send the page address, or any other value,
as referrer in according HTTP header.
noreferrer
also implies the propertynoopener
, which instructs the browser to open the link without granting the new browsing context access to the document that opened it.