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Kibana CVE-2026-78584

| EUVDEUVD-2026-70063 MEDIUM
Observable Response Discrepancy (CWE-204)
2026-09-02 elastic GHSA-jvjr-rxxh-8cxq
Information Disclosure Elastic Kibana
4.3
CVSS 3.1 · Vendor: elastic
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Severity by source

Vendor (elastic) PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI
4.3 MEDIUM

Network-accessible API, low-privilege auth required, scope unchanged, only limited confidentiality impact (existence of query ID, no content or endpoint data).

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (elastic).

CVSS VectorVendor: elastic

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

Lifecycle Timeline

2
Analysis Generated
Sep 02, 2026 - 15:43 vuln.today
CVE Published
Sep 02, 2026 - 14:43 cve.org
MEDIUM 4.3

DescriptionCVE.org

Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via Query System for Information (CAPEC-54). An authenticated user holding Osquery live-query privileges could determine whether a scheduled query identifier exists in a Kibana space they are not authorized to access.

AnalysisAI

Observable response discrepancy in Kibana's Osquery feature enables cross-space scheduled query ID enumeration by authenticated low-privileged users. An attacker holding Osquery live-query privileges can determine whether a scheduled query identifier exists in a Kibana space they are not authorized to access by observing distinguishably different API responses. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) an authenticated Kibana session with the Osquery live-query privilege explicitly granted to the user role; (2) the Osquery feature enabled within the Kibana deployment; (3) the ability to reference or guess scheduled query identifiers from other Kibana spaces. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 4.3 (Medium) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N is well-calibrated for this vulnerability: it requires a low-privilege authenticated session, has no integrity or availability impact, and exposes only metadata about query identifier existence rather than query content or endpoint data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Kibana to version 9.4.4 or later as documented in Elastic's advisory ESA-2026-161 (https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-161/390115). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-78584 vulnerability details – vuln.today
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