How severe is CVE-2022-23131?

CVE-2022-23131 has a CVSS 3.1 base score of 9.1 (CRITICAL). EPSS estimates a 95.7% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-23131: Unsafe client-side session storage leading to

CISA Known Exploited Vulnerabilities

Zabbix Frontend Authentication Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-02-22

Remediation due

2022-03-08

Required action
Apply updates per vendor instructions.

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

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).

Severity

CVSS 3.1 · CNA9.1 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Zabbix	Frontend	5.4.0 - 5.4.8 5.4.9 to <5.4.9* (unaffected)

References

1 Links

Other references

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

Record Details

Published

2022-01-13

Last updated

2025-10-21

Assigner (CNA)

Zabbix

Credited to

Zabbix wants to thank Thomas Chauchefoin from SonarSource for reporting this issue to us

More from Zabbix

CVE-2022-231343.7

Possible view of the setup pages by unauthenticated users if config file already exists

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-290 · Authentication Bypass by Spoofing

IAM Tools Application Security Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.