CVE-2022-23131Actively exploitedAdded to KEV 2022-02-22

Zabbix Frontend Authentication Bypass Vulnerability

Zabbix, Frontend

Description

Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

Critical

95.7%

estimated chance of real-world exploitation in the next 30 days, higher than 99.9% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-03-08

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