CVE-2026-78595

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

Published: Sep 3, 2026Updated: Sep 8, 2026 Sources: CVE List NVDCWE-862

4.3MEDIUM

Description

Missing 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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-862

Affected Products

Elastic

commercial·USaka elasticsearch co., elastic.co

Kibana

Databases

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://discuss.elastic.co/t/kibana-9-4-6-9-5-3-security-update-esa-2026-153/390160

discuss.elastic.co

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