Zabbix Server 7.4.x < 7.4.11 Authentication Bypass (ZBX-28071)

The version of Zabbix Server installed on the remote host is 7.4.x prior to 7.4.11. It is, therefore, affected by an authentication bypass vulnerability: - The cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. In deployments that utilize both...

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...

CVE-2026-23933

In Zabbix 7.4, the frontend session signing key was erroneously written to the database seed. When SAML authentication and guest users are both enabled, this key can be extracted and used to forge valid session cookies, enabling unauthorized access. CVSS 4.0 scores this HIGH (7.7). The Zabbix tic...

PT-2026-76959

Name of the Vulnerable Software and Affected Versions Zabbix version 7.4 Description The cryptographic key used for signing Frontend sessions is incorrectly written to the database seed. This issue affects deployments that simultaneously use SAML authentication and guest users, allowing the key t...