CVE-2026-78596: Elastic Kibana

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.

Affected products

• Elastic Kibana: from 8.18.3, up to and including 8.19.20; from 9.0.3, up to and including 9.4.5; from 9.5.0, up to and including 9.5.2

Published 2026-09-03. Last modified 2026-09-08.