CVE-2022-23131: Zabbix Frontend Authentication Bypass Vulnerability

CISA Known Exploited Vulnerabilities

Name

Zabbix Frontend Authentication Bypass Vulnerability

Vendor

Zabbix

Product

Frontend

Added to the catalog

2022-02-22

Due date for US federal agencies

2022-03-08

Weaknesses

CWE-290

Catalog version

2026.10.30

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

Required action (CISA)

Apply updates per vendor instructions.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://nvd.nist.gov/vuln/detail/CVE-2022-23131

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2022-01-13T16:15:08.053

Last modified

2026-06-17T04:29:34.147

Weaknesses

CWE-290

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).

References

• https://support.zabbix.com/browse/ZBX-20350 (Issue Tracking, Patch, Vendor Advisory)
• https://support.zabbix.com/browse/ZBX-20350 (Issue Tracking, Patch, Vendor Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:59.479Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2022-23131

CVE record

Title (CNA)

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

Assigner

Zabbix

State

PUBLISHED

Published

2022-01-13T15:50:39.137Z

Updated

2025-10-21T23:15:49.275Z

Problem types

CWE-290 Authentication Bypass by Spoofing

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).

References

• https://support.zabbix.com/browse/ZBX-20350

Read on 2026-11-03T01:10:06.505Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2022/23xxx/CVE-2022-23131.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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