What is CVE-2026-78600?

CVE-2026-78600 is a low-severity vulnerability in Elastic Eck Operator, classified under Incomplete Cleanup. CVSS score: 3.5/10. Published 2026-09-02.

How severe is CVE-2026-78600?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Elastic Eck Operator

CVE-2026-78600

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.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Elastic Eck Operator

Weakness classification (CWE)

CWE-459 — Incomplete Cleanup

References

security@elastic.co

Frequently asked questions

What is CVE-2026-78600?: CVE-2026-78600 is a low-severity vulnerability in Elastic Eck Operator, classified under Incomplete Cleanup. CVSS score: 3.5/10. Published 2026-09-02.
How severe is CVE-2026-78600?: Low severity. CVSS v3 base score is 3.5 out of 10.