{"id":"CVE-2026-104733","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104733","generatedAt":"2026-10-28T05:28:12.107Z","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.","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.","published":"2026-10-02T13:17:45.000Z","lastModified":"2026-10-02T17:59:09.000Z","status":"Deferred","sourceIdentifier":"vulnerability@ncsc.ch","cvss":{"version":"4.0","score":7.4,"severity":"HIGH","vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-290"],"affected":[],"epss":{"score":0.00215,"percentile":0.11866,"date":"2026-10-27","history":[{"date":"2026-10-03","score":0.00215,"percentile":0.10853}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-02T13:17:45.000Z","detail":{"score":"7.4","severity":"HIGH","publishedAt":"2026-10-02T13:17:45.010Z"},"summary":"New CVE, high severity (CVSS 7.4)."}],"references":[{"url":"https://github.com/processone/ejabberd/releases#release-26.07","source":"vulnerability@ncsc.ch"},{"url":"https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/","source":"vulnerability@ncsc.ch"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104733","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}