CVE-2026-23933

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://support.zabbix.com/browse/ZBX-28071	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

23 Sep 2026, 14:31

Type	Values Removed	Values Added
References	~~() https://support.zabbix.com/browse/ZBX-28071 -~~	() https://support.zabbix.com/browse/ZBX-28071 - Vendor Advisory
First Time		Zabbix zabbix Zabbix
CPE		cpe:2.3:a:zabbix:zabbix::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1

Information

Published : 2026-08-18 13:17

Updated : 2026-09-23 14:31

NVD link : CVE-2026-23933

Mitre link : CVE-2026-23933

CVE.ORG link : CVE-2026-23933

JSON object : View

Products Affected

zabbix

zabbix

CWE

CWE-259

Use of Hard-coded Password

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