addthis.com XSS vulnerability

Vulnerable URL: http://www.addthis.com/bookmark.php?ate=AT==bkm-152=0===55fe79ae5e2dd7d2==x%253cscript%253ealert%2528/XSSPOSED/%2529%253c%252fscript%253e=en=template=vars======== Details: Description| Value ---|--- Patched:| Yes, at 13.01.2016 Latest check for patch:| 13.01.2016 18:42 GMT...