CVE-2026-78598

Incorrect Authorization in Kibana Leading to Unauthorized Cross-Space Exposure of Machine Learning Job Data

State: Published
Severity: 5.4 Medium
Published: Sep 2, 2026
Updated: Sep 2, 2026
Reserved: Aug 24, 2026

Description

Incorrect Authorization (CWE-863) in the Kibana machine learning feature can lead to information disclosure via Exploiting Incorrectly Configured Access Control Security Levels (CAPEC-180). An authenticated user holding machine learning job management privileges within a single Kibana space could cause a job's saved object to become accessible across all spaces in the Kibana instance, without holding access rights to those additional spaces.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	elastic

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.19.18Affected 9.0.0 through 9.3.7Affected 9.4.0 through 9.4.3Affected

References

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-156/390111

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