CVE-2026-23933 — In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed
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.
Platform
Zabbix
CVE Record
CVE-2026-23933
CVSS Score
7.7/10
Published
18 August 2026
Views
24
Primary source: Review the official advisory at nvd.nist.gov
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Summary
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.
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