What’s Vulnerable › Vulnerabilities
CVE-2026-78600: Incomplete Cleanup in Elastic Cloud on Kubernetes Leading to Unauthorized Cross-Namespace Credential Retention
- Severity: low (CVSS 3.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-02 · updated 2026-09-03
- Weakness: CWE-459
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.
Affected products
- Elastic Cloud on Kubernetes: from 2.6.0 before 3.5.0 — fixed in 3.5.0
How to fix
Upgrade to a fixed version: Elastic Cloud on Kubernetes 3.5.0. Check the vendor advisory for mitigations.
References
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