Incomplete cleanup in Elastic Cloud on Kubernetes - CVE-2026-78600
Published: September 2, 2026
Vulnerability identifier: #VU146672
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78600
CWE-ID: CWE-459
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to incomplete cleanup in cross-namespace association credential handling when RBAC enforcement denies a cross-namespace association. A remote user can retain previously issued credentials to disclose sensitive information.
Only deployments where cross-namespace resource associations were previously established and later became subject to RBAC enforcement are vulnerable.
Affected software
Elastic Cloud on Kubernetes
How to mitigate CVE-2026-78600
Install security update from vendor's website.
Elastic Cloud on Kubernetes - update to 3.5.0