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 yaxim and Bruno (0.8.6 - 0.8.8; Android).
https://github.com/ge0rg/yaxim/commit/65a38dc77545d9568732189e86089390f0ceaf9f