Shotwell version 0.22.0 (and possibly other versions) is vulnerable to a TLS/SSL certification validation flaw resulting in a potential for man in the middle attacks.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "0.22.0+git20160108.r1.f2fb1f7-0ubuntu1", "binary_name": "shotwell" }, { "binary_version": "0.22.0+git20160108.r1.f2fb1f7-0ubuntu1", "binary_name": "shotwell-common" }, { "binary_version": "0.22.0+git20160108.r1.f2fb1f7-0ubuntu1", "binary_name": "shotwell-dbg" }, { "binary_version": "0.22.0+git20160108.r1.f2fb1f7-0ubuntu1", "binary_name": "shotwell-dbgsym" } ] }