CVE-2026-104733
User Impersonation/Authorization Bypass in XMPP Server ejabberd
- State
- Published
- Severity
- 7.4 High
- Published
- Oct 2, 2026
- Updated
- Oct 2, 2026
- Reserved
- Oct 2, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.4 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:H/SI:H/SA:H/E:P | NCSC.ch |
Weaknesses
- CWE-290 Authentication Bypass by Spoofing
Affected Products
| Product | Versions |
|---|---|
ejabberdProcessOne |
|
References
- https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/third-party-advisory
- https://github.com/processone/ejabberd/releases#release-26.07release-notes
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