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-2016-9928 medium priority: Ubuntu including 1 source packages (mcabber), 12 status rows across 12 suites (artful, bionic, cosmic, disco, eoan, focal, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 5, ignored 4, DNE 1, needs-triage 1, released 1.
MCabber before 1.0.4 is vulnerable to roster push attacks, which allows remote attackers to intercept communications, or add themselves as an entity on a 3rd party's roster as another user, which will also garner associated privileges, via crafted XMPP packets.