Security Advisory
CVE-2026-78609
5.4
MEDIUM
Vulnerability Description
Incorrect Authorization (CWE-863) in Elastic Cloud on Kubernetes (ECK) can lead to unauthorized modification of data via Metadata Spoofing (CAPEC-690). An actor holding limited Kubernetes permissions confined to a single namespace could cause attacker-controlled certificate material to be included in the Elasticsearch client trust bundle managed by ECK in a separate namespace.
Published Date
September 2, 2026
Official Source
NIST NVD Advisory