CVE-2026-78596

Missing Authorization in Kibana Leading to Unauthorized Cross-Space Write Operations

MEDIUM
4.3
CVSS Score
Published: September 3, 2026 at 06:35 PM UTC
Updated: September 8, 2026 at 02:31 PM UTC
1 product affected across 1 vendorKibana

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

8.18.3 ≤ v ≤ 8.19.209.0.3 ≤ v ≤ 9.4.59.5.0 ≤ v ≤ 9.5.28.18.39.0.39.5.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMelastic
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-862

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