CVE-2026-78609

CVE CVE-2026-78609EUVD EUVD-2026-70052Published 2026-09-02T14:43:04.000ZLast changed 2026-09-02T15:58:13.000ZCVSS 5.4

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Elastic — Eck Operator 2.6.0 ≤3.4.1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Elastic — ECK Operator

Does this concern one of your customers?

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