CVE-2026-78600
Published:September 02, 2026
Updated:September 22, 2026
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 Packages
https://github.com/elastic/cloud-on-k8s.git (GITHUB):
Affected version(s) >=v2.7.0 <v3.5.0Fix Suggestion:
Update to version v3.5.0github.com/elastic/cloud-on-k8s/v3 (GO):
Affected version(s) >=v3.1.0 <v3.5.0Fix Suggestion:
Update to version v3.5.0Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incomplete Cleanup
EPSS
Base Score:
0.18