CVE-2017-5604: Mcabber

Medium severity, CVSS 5.9. EPSS: 1.3% chance of exploitation in the next 30 days.

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 mcabber 1.0.0 - 1.0.4.

Affected products

• Mcabber Mcabber: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only

Published 2017-02-09. Last modified 2026-06-17.