# CVE-2026-78600

## Summary

- **CVE ID:** CVE-2026-78600
- **Severity:** LOW
- **CVSS Score:** 3.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N)
- **CWE:** CWE-459
- **Published:** Sep 2, 2026
- **Last Modified:** Sep 2, 2026

## 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 — Eck Operator (2.6.0)

## References

- [CNA](https://discuss.elastic.co/t/elastic-cloud-on-kubernetes-3-5-0-security-update-esa-2026-146/390106)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._