{"id":"CVE-2022-23131","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-23131","generatedAt":"2026-10-31T13:57:27.661Z","title":"Zabbix Frontend Authentication Bypass Vulnerability","description":"In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default).","published":"2022-01-13T16:15:08.000Z","lastModified":"2026-06-17T04:29:34.000Z","status":"Analyzed","sourceIdentifier":"security@zabbix.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-290"],"affected":["zabbix/zabbix"],"epss":{"score":0.95683,"percentile":0.9987,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-02-22","dueDate":"2022-03-08","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-23131"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 8 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://support.zabbix.com/browse/ZBX-20350","tags":["Issue Tracking","Patch","Vendor Advisory"],"source":"security@zabbix.com"},{"url":"https://support.zabbix.com/browse/ZBX-20350","tags":["Issue Tracking","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-23131","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."}