How severe is CVE-2022-23131?

CVE-2022-23131 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2022-23131 being actively exploited?

Yes. CVE-2022-23131 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-22, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2022-23131?

CVE-2022-23131 primarily affects Zabbix. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23131?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2022-23131 have an EU (EUVD) identifier?

Yes. CVE-2022-23131 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28222. It is also flagged as exploited in the EUVD (since 2022-02-22).

When was CVE-2022-23131 published?

CVE-2022-23131 was published on 2022-01-13 and last updated on 2026-06-17.

CVE-2022-23131

CVE-2022-23131 is a critical-severity vulnerability in Zabbix with a CVSS 3.x base score of 9.1. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-02-22). The underlying weakness is classified as CWE-290.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 5.1
EPSS exploit prediction: 96% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-02-22)
EU (EUVD) id: EUVD-2022-28222
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-02-22)
Weakness: CWE-290
Affected product: Zabbix
Published: 2022-01-13
Last modified: 2026-06-17

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).

Frequently asked questions

What is CVE-2022-23131?: 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).
How severe is CVE-2022-23131?: CVE-2022-23131 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2022-23131 being actively exploited?: Yes. CVE-2022-23131 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-22, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-23131?: CVE-2022-23131 primarily affects Zabbix. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23131?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-23131 have an EU (EUVD) identifier?: Yes. CVE-2022-23131 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28222. It is also flagged as exploited in the EUVD (since 2022-02-22).
When was CVE-2022-23131 published?: CVE-2022-23131 was published on 2022-01-13 and last updated on 2026-06-17.

References

Affected products (2)

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

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