CVE-2026-104733

Description

User Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.

References

• https://github.com/processone/ejabberd/releases#release-26.07
• https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/