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CVE-2022-23131

9.8, critical Known exploited

Zabbix Frontend Authentication Bypass Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
96% higher than 99.8% of scored CVEs
Exploitation
Confirmed in the wild
Published
13 Jan 20224 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 22 Feb 2022. US federal agencies had to remediate by 8 Mar 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

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).

Details

Vendor
Zabbix
Product
Frontend
Weakness
CWE-290 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
security@zabbix.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References 2

Patches and fixes 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Zabbix CVEs

Every Zabbix CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2022-23134 Zabbix Frontend Improper Access Control Vulnerability KEV EPSS 95% 5.3, medium

Beyond this page

Is CVE-2022-23131 in your network?

This page tells you how dangerous CVE-2022-23131 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2022-23131 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.