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CVE-2022-23131

CRITICAL · CVSS 9.1 · Analyzed

Published: 2022-01-13 · Updated: 2026-06-17 · Source: NVD

Stored catalog record

Source record retrieved 2026-10-28T14:22:00.281798+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

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Vulnerability overview

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).

Patch review priority

Known exploitation: prioritize review

  • CISA KEV lists real-world exploitation.

FIRST EPSS: 95.68% · percentile 99.9 · score date 2026-10-27.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
9.1 · CRITICAL
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-290

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Zabbix · Frontend
Added to catalog
2022-02-22
Required action
Apply updates per vendor instructions.
CISA remediation due date
2022-03-08

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*

    From (inclusive): 5.4.0

    Through (inclusive): 5.4.8

  • cpe:2.3:a:zabbix:zabbix:6.0.0:alpha1:*:*:*:*:*:*

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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