CVE-2026-78584 PUBLISHED

Observable Response Discrepancy in Kibana Leading to Cross-Space Information Disclosure

Assigner: elastic
Reserved: 24.08.2026 Published: 02.09.2026 Updated: 02.09.2026

Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via Query System for Information (CAPEC-54). An authenticated user holding Osquery live-query privileges could determine whether a scheduled query identifier exists in a Kibana space they are not authorized to access.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Elastic
Product	Kibana
Versions	Default: unaffected affected from 9.4.0 to 9.4.3 (incl.)

References

https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-161/390115

Problem Types

CWE-204 Observable Response Discrepancy CWE

Impacts

CAPEC-54 Query System for Information