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.

Score
CVSS 3.1 9.1 Critical
Status
Analyzed - security@zabbix.com
Published
2026-08-18
Last modified
2026-08-19
Weaknesses
CWE-259

Affected products

References

 
 
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