CVE-2026-59788: Zabbix

Medium severity, CVSS 5.7. EPSS: 0.3% chance of exploitation in the next 30 days.

The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an import file, runs arbitrary JavaScript as the Super Admin who grants consent.

Affected products

• Zabbix Zabbix

Published 2026-10-05. Last modified 2026-10-06.