Observable Response Discrepancy in Kibana - CVE-2026-78584
Published: September 2, 2026
Vulnerability identifier: #VU146663
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78584
CWE-ID: CWE-204
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to observable response discrepancy in the Osquery feature when checking scheduled query identifiers across Kibana spaces. A remote user can determine whether a scheduled query identifier exists in a space they are not authorized to access to disclose sensitive information.
Only deployments with the Osquery feature enabled and multiple Kibana spaces configured are affected.
Affected software
Kibana
How to mitigate CVE-2026-78584
Install security update from vendor's website.
Kibana - update to 9.4.4