CVE-2015-7776 in Garoon
Summary
Cybozu Garoon 3.x and 4.x before 4.2.0 does not properly restrict loading of IMG elements, which makes it easier for remote attackers to track users via a crafted HTML e-mail message, a different vulnerability than CVE-2016-1196.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.