CVE-2017-5593: Psi-Plus Psi+

Medium severity, CVSS 5.9. EPSS: 0.7% 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 Psi+ (0.16.563.580 - 0.16.571.627).

Affected products

• Psi-Plus Psi+: version 0.16.563.580 only; version 0.16.571.627 only

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