VULNERABILITY INTELLIGENCE

CVE-2022-23131

CVSS score9.1 CRITICAL

EPSS probability95.68%

CISA KEVKnown exploited vulnerability

Published2022-01-13

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Known Exploited Vulnerability

Zabbix Frontend Authentication Bypass Vulnerability

Vendor / product: Zabbix / Frontend

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).

Weakness classification

security@zabbix.com: CWE-290
nvd@nist.gov: CWE-290

Primary references

security@zabbix.com — Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource