CVE-2026-26939

Missing Authorization in Kibana Leading to Unauthorized Endpoint Response Action Configuration

State: Published
Severity: 6.5 Medium
Published: Mar 19, 2026
Updated: Mar 19, 2026
Reserved: Feb 16, 2026

Description

Missing Authorization (CWE-862) in Kibana’s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration (host isolation, process termination, and process suspension) via CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs). This requires an authenticated attacker with rule management privileges.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N	elastic

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
KibanaElastic	9.0.0 through 9.2.5Affected 9.3.0 through 9.3.0Affected 8.0.0 through 8.19.11Affected

References

https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530

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