CVE DATABASE / CVE-2022-23131
CVE-2022-23131
Zabbix Frontend Authentication Bypass Vulnerability
Confirmed exploited in the wild. Added 2022-02-22.
Federal remediation due 2022-03-08.
Required action: Apply updates per vendor instructions.
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).
CVSS 3.1 breakdown
| Base score | 9.1 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | NONE |
Weakness type (CWE)
Affected products
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References
- https://support.zabbix.com/browse/ZBX-20350
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-30. Always verify against the vendor advisory before acting.