CVE-2026-78606

Summary

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.

Affected Software

VendorProductVersion RangeStatus
ElasticKibana8.19.11 <= 8.19.20affected
ElasticKibana9.3.0 <= 9.4.5affected
ElasticKibana9.5.0 <= 9.5.1affected

Weaknesses

  • CWE-863: CWE-863 Incorrect Authorization

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References