CVE-2026-78601: Elastic Kibana

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization (CWE-862) in Kibana can lead to information disclosure via Privilege Abuse (CAPEC-122). An authorization control was not applied to a Kibana Entity Store configuration operation, allowing an authenticated user with elevated Kibana privileges to indirectly cause a background task to read from Elasticsearch indices that user is not authorized to access. Derived entity data from those indices is then exposed through the entity store output.

Affected products

• Elastic Kibana: from 9.4.0, before 9.4.5 (fixed in 9.4.5)

Published 2026-09-02. Last modified 2026-09-03.