CVE-2022-23131

CRITICAL9.1

CISA KEV

Published 2022-01-13 · Updated 2026-06-17 · Source security@zabbix.com

Summary

CVE-2022-23131 is a critical-severity (CVSS 9.1) vulnerability in Zabbix Frontend. CISA added it to the Known Exploited Vulnerabilities catalog on February 22, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 8, 2022. CISA does not currently list it as used in ransomware campaigns. Zabbix has 2 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 2 known-exploited Zabbix vulnerabilities →

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).

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

CWE-290CWE-290

CISA Known-Exploited Vulnerability

Product: Zabbix — Frontend

Name: Zabbix Frontend Authentication Bypass Vulnerability

Date added: 2022-02-22 · Due: 2022-03-08

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Zabbix vulnerabilities

Most recently added to CISA KEV

CVE-2022-23134
Frontend — Zabbix Frontend Improper Access Control Vulnerability
added 2022-02-22

View all →

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