CVE-2026-78600
Low
Description
Incomplete Cleanup (CWE-459) in Elastic Cloud on Kubernetes (ECK) can lead to unauthorized access via Privilege Abuse (CAPEC-122). Authentication credentials persist after a cross-namespace association has been denied by RBAC enforcement, allowing a low-privileged tenant to retain unauthorized read access to the associated Elasticsearch cluster.
SeverityLow
CVSS3.5
Exploit probability—
ProductElastic Cloud On Kubernetes
PublishedSep 2, 2026
First seenSep 2, 2026
Weakness typeCWE-459CWE-459
How to fix
Update
- elastic elastic_cloud_on_kubernetes3.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic elastic_cloud_on_kubernetes | 2.6.0 ≤ v < 3.5.0 | 3.5.0 |
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