CVE-2017-5603

An incorrect implementation of "XEP-0280: Message Carbons" in multiple XMPP clients allows a remote attacker to impersonate any user, including contacts, in the vulnerable application’s display. This allows for various kinds of social engineering attacks. This CVE is for Jitsi 2.5.5061 – 2.9.5544.

Source: CVE-2017-5603