CVE-2022-23131

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

Published Jan 13, 2022 CVSS 3.1 · 9.1 Critical EPSS 95.7% KEV · Listed
Description
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).

Remediation

Vendor Solution

To remediate this vulnerability, install the updates or if an immediate update is not possible, follow the presented workarounds.


Vendor Workaround

Disable SAML authentication

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-02-22'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zabbix
Published
Updated
Oct 21, 2025, 11:15 PM
Reserved
Jan 11, 2022, 12:00 AM
Status
Analyzed
Published
Jan 13, 2022, 4:15 PM
Modified
Jun 17, 2026, 4:29 AM