In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL and contact information of an existing user with sufficient privileges.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade zabbix | Aug 22, 2024 | Mar 3, 2021 |
| Debian | — | Upgrade zabbix | Apr 14, 2023 | Mar 3, 2021 |
| Suse | — | Upgrade zabbix-serverUpgrade zabbix-java-gatewayUpgrade zabbix-server-mysqlUpgrade zabbix-proxy-postgresqlUpgrade zabbix-agentUpgrade zabbix-proxy-mysqlUpgrade zabbix-proxy-sqliteUpgrade zabbix-phpfrontendUpgrade zabbix-proxyUpgrade zabbix-server-postgresql | Mar 31, 2021 | Mar 3, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Mar 3, 2021 |
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