CVE-2017-5858: Conversejs Converse.js

Medium severity, CVSS 5.9. EPSS: 0.9% 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 Converse.js (0.8.0 - 1.0.6, 2.0.0 - 2.0.4).

Affected products

• Conversejs Converse.js: version 0.8.0 only; version 0.8.1 only; version 0.8.2 only; version 0.8.3 only; version 0.8.4 only; version 0.8.5 only; …

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