CVE-2022-23131
Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML
- Published
- Jan 13, 2022
- Updated
- Oct 21, 2025
- Assigning CNA
- Zabbix
- Evidence observed
- Feb 22, 2022
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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).
Sources
20- CVE-2022-23131Exploit
Exploits Zabbix SAML SSO authentication bypass (CVE-2022-23131) and includes a FOFA query to locate vulnerable Zabbix instances.
- CVE-2022-23131Exploit
Zabbix Frontend Authentication Bypass Vulnerability
- CVE-2022-23131Exploit
CVE-2022-23131 Zabbix Server SAML authentication exploit
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