CVE-2026-78596

Missing Authorization in Kibana Leading to Unauthorized Cross-Space Write Operations

State: Published
Severity: 4.3 Medium
Published: Sep 3, 2026
Updated: Sep 3, 2026
Reserved: Aug 24, 2026

Description

Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.

Scores

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

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
KibanaElastic	8.18.3 through 8.19.20Affected 9.0.3 through 9.4.5Affected 9.5.0 through 9.5.2Affected

References

https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-3-security-update-esa-2026-154/390161

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