RTE open in new window not working

There is a XSS Filter known  issue with the RTE component affecting Adobe CQ 5.6, the XSS filter trims the target attribute of the a element.

Symptom

Inside the RTE component, the open in new window feature of the hyperlink component doesn’t work. As a result, the link is opened in the same page.

Solution

We need to declare the target attribute in the antisamy configuration file in CRXDE Light as follow:

1. 1. Copy /libs/cq/xssprotection/config.xml to /apps/cq/xssprotection/config.xml.
   2. Open /apps/cq/xssprotection/config.xml.
   3. In the common-attributes section, add the following target attribute declaration.

<attribute name="target">
<regexp-list>
<regexp value="[a-zA-Z0-9-_\$]+"/>
</regexp-list>
</attribute>

1. 1. Find the a tag declaration by searching the term
   2. Add the line below in the list of attributes.

<attribute name="target" />

1. Save the file.

http://helpx.adobe.com/experience-manager/kb/target-attribut-issue-tag.html