CVE-2026-78606
Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username value, one could read, modify, and delete the other's private Elastic AI Assistant Knowledge Base entries.
- Published Sep 1, 2026
- CVSS 4.2 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)