Vulnerability DatabaseCVE-2026-104733
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CVE-2026-104733
Published:October 02, 2026
Updated:October 13, 2026
User Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.
Affected Packages
https://github.com/processone/ejabberd.git (GITHUB):
Affected version(s) >=17.06-beta <26.07
Fix Suggestion:
Update to version 26.07
ejabberd (HEX):
Affected version(s) >=17.6.0 <26.7.0
Fix Suggestion:
Update to version 26.7.0
Related Resources (5)
https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/
https://github.com/processone/ejabberd/releases#release-26.07
https://github.com/processone/ejabberd
https://nvd.nist.gov/vuln/detail/CVE-2026-104733
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104733.json
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CVSS v4
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
Exploit Maturity
POC
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Authentication Bypass by Spoofing
CWE-290
EPSS
Base Score:
0.21