Missing Authorization in Kibana Fleet Plugin Leading to Cross-Space Agent Data Disclosure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-78595
StatePUBLISHED
Assignerelastic
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-03 19:17:28 UTC
Updated2026-09-03 19:17:28 UTC
DescriptionMissing Authorization in Kibana Leading to Information Disclosure / Missing Authorization (CWE-862) in the Kibana Fleet feature can lead to information disclosure via Privilege Abuse (CAPEC-122). An authenticated user holding read-level Fleet agent privileges in one Kibana space could enumerate agent metadata and access diagnostic content belonging to agents enrolled in other Kibana spaces.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.001620000 probability, percentile 0.056410000 (date 2026-09-04)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNACVSS4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Elastic Kibana affected 9.1.0 9.4.5 semver Not specified
CNA Elastic Kibana affected 9.5.0 9.5.2 semver Not specified

References

ReferenceSourceLinkTags
discuss.elastic.co/t/kibana-9-4-6-9-5-3-security-update-esa-2026-153/390160 [email protected] discuss.elastic.co
CVE Program record CVE.ORG www.cve.org canonical
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