{"id":"CVE-2026-104733","title":"User Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.","summary":"User Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.","severity":"high","cvss":7.4,"cvssVector":"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","vendor":"ProcessOne","product":"ejabberd","affected":["ejabberd <= 26.04"],"published":"2026-10-02","updated":"2026-10-02","sourceUpdated":"2026-10-02T13:17:45.010","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104733","references":[{"url":"https://github.com/processone/ejabberd/releases#release-26.07","label":"vulnerability@ncsc.ch"},{"url":"https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/","label":"vulnerability@ncsc.ch"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-02T13:19:14.157Z","slug":"CVE-2026-104733","body":"## Overview\n\nUser Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}