Zabbix Frontend Authentication Bypass Vulnerability

Added to KEV
2022-02-22
Federal due date
2022-03-08
Vendor
Zabbix
Product
Frontend
EPSS
99.9th percentile (score 0.940, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2022-23131

CISA short description

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

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.