View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2016-7967 medium priority: Ubuntu including 2 source packages (kdepim, kf5-messagelib), 12 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): not-affected 5, DNE 3, ignored 2, needs-triage 1, released 1.
KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. Since the generated html is executed in the local file security context by default access to remote and local URLs was enabled.