CVE-2026-78609
Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of Data
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | elastic |
| Product | eck operator |
| Published | Sep 2, 2026 |
| Last Updated | Sep 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Elastic / Eck Operator
2.6.0 ≤ 3.4.1