CVE-2026-78609

Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of Data

Published Sep 2, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
Incorrect Authorization (CWE-863) in Elastic Cloud on Kubernetes (ECK) can lead to unauthorized modification of data via Metadata Spoofing (CAPEC-690). An actor holding limited Kubernetes permissions confined to a single namespace could cause attacker-controlled certificate material to be included in the Elasticsearch client trust bundle managed by ECK in a separate namespace.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Elastic elastic Cloud On Kubernetes
CPEs cpe:2.3:a:elastic:elastic_cloud_on_kubernetes:*:*:*:*:*:*:*:*
Vendors & Products Elastic elastic Cloud On Kubernetes
Type Values Removed Values Added
First Time appeared Elastic
Elastic eck Operator
Vendors & Products Elastic
Elastic eck Operator
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Incorrect Authorization (CWE-863) in Elastic Cloud on Kubernetes (ECK) can lead to unauthorized modification of data via Metadata Spoofing (CAPEC-690). An actor holding limited Kubernetes permissions confined to a single namespace could cause attacker-controlled certificate material to be included in the Elasticsearch client trust bundle managed by ECK in a separate namespace.
Title Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of Data
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
elastic
Published
Updated
Sep 2, 2026, 3:58 PM
Reserved
Aug 24, 2026, 9:13 PM
Status
Analyzed
Published
Sep 2, 2026, 3:17 PM
Modified
Sep 4, 2026, 4:39 PM