CVE-2026-78600: CWE-459 Incomplete Cleanup in Elastic Eck Operator
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.
CVSS v3.1
Score 3.5low
Affected software
Elastic
Eck Operator
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-459) in Elastic ECK Operator 2.6.0 involves incomplete cleanup of authentication credentials after RBAC denies a cross-namespace association. As a result, a low-privileged tenant may continue to have unauthorized read access to an Elasticsearch cluster despite RBAC restrictions. The CVSS vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, scope changed, and low confidentiality impact.
Potential Impact
Unauthorized read access to Elasticsearch clusters can occur due to lingering authentication credentials after RBAC denies cross-namespace associations. This could lead to information disclosure but does not affect integrity or availability. The impact is limited to confidentiality with low severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor Elastic's advisories for updates and consider restricting cross-namespace associations until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-24T21:13:52.889Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a98384bacd9273b495d16f7
Added to database: 09/02/2026, 14:52:59 UTC
Last enriched: 09/07/2026, 13:44:16 UTC
Last updated: 10/18/2026, 18:48:24 UTC
Views: 74
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