CVE-2026-78600— Incomplete Cleanup in Elastic Cloud on Kubernetes Leading to Unauthorized Cross-Namespace Credential Retention
Quick assessment
Affected
Elastic Eck Operator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Elastic Cloud on Kubernetes (ECK) 中的“不完整的清理”（CWE-459）可能导致通过“权限滥用”（CAPEC-122）引发的非授权访问。在 RBAC 强制机制拒绝跨命名空间关联后，认证凭据仍然持续存在，使得低权限租户能够保留对关联 Elasticsearch 集群的非授权读取访问权限。
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I. Basic Information for CVE-2026-78600
Vulnerability Information
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Vulnerability Title
Incomplete Cleanup in Elastic Cloud on Kubernetes Leading to Unauthorized Cross-Namespace Credential Retention
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
清理环节不完整
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Elastic | Eck Operator | 2.6.0 ~ 3.4.1 | - |
|
II. Public POCs for CVE-2026-78600
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-78600 (1)
Same Patch Batch · Elastic · 2026-09-02 · 15 CVEs total
| CVE-2026-78604 | 7.8 HIGH | Incorrect Permission Assignment for Critical Resource in Elastic Agent Leading to Local Pr |
| CVE-2026-78590 | 7.3 HIGH | Improper Limitation of a Pathname to a Restricted Directory in Kibana Leading to Unauthori |
| CVE-2026-78588 | 6.5 MEDIUM | Allocation of Resources Without Limits or Throttling in Filebeat Leading to Denial of Serv |
| CVE-2026-78586 | 6.5 MEDIUM | Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic |
| CVE-2026-78599 | 6.5 MEDIUM | Stored Path Traversal in Kibana Leading to Unauthorized Deletion of Internal Resources |
| CVE-2026-78591 | 6.3 MEDIUM | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Kibana L |
| CVE-2026-78601 | 5.5 MEDIUM | Missing Authorization in Kibana Leading to Unauthorized Elasticsearch Index Data Exposure |
| CVE-2026-78598 | 5.4 MEDIUM | Incorrect Authorization in Kibana Leading to Unauthorized Cross-Space Exposure of Machine |
| CVE-2026-78609 | 5.4 MEDIUM | Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modificatio |
| CVE-2026-78602 | 5.3 MEDIUM | Improper Limitation of a Pathname to a Restricted Directory in Elastic Maps Server Leading |
| CVE-2026-78594 | 4.9 MEDIUM | Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of |
| CVE-2026-82293 | 4.3 MEDIUM | Incorrect Authorization in Kibana Leading to Unauthorized Resource Consumption |
| CVE-2026-78584 | 4.3 MEDIUM | Observable Response Discrepancy in Kibana Leading to Cross-Space Information Disclosure |
| CVE-2026-78587 | 3.1 LOW | Incorrect Authorization in Fleet Server Leading to Denial of Service of Agent Upload Opera |
IV. Related Vulnerabilities
Same vendor: Elastic
-
CVE-2026-82293
Incorrect Authorization in Kibana Leading to Unauthorized Re -
CVE-2026-78588
Allocation of Resources Without Limits or Throttling in File -
CVE-2026-78587
Incorrect Authorization in Fleet Server Leading to Denial of -
CVE-2026-78586
Allocation of Resources Without Limits or Throttling in Kiba -
CVE-2026-78584
Observable Response Discrepancy in Kibana Leading to Cross-S
V. Comments for CVE-2026-78600
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