Vulnerability Report

CVE-2026-78609

Title: CVE-2026-78609

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-78609.

CWE Category CWE-863

Published Date Sep 02, 2026

Modified Date Sep 04, 2026

Exploit Status Not Found

Score 5.4 CVSS v3.1

Exploit Probability (EPSS)

0.15%

Vulnerability Summary

CVE-2026-78609: 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.

Impacted Vendors

elastic 1

Reference Links

https://discuss.elastic.co/t/elastic-cloud-on-kubernetes-3-5-0-security-update-esa-2026-145/390105

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.4

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-78609 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

September 04, 2026 MODIFIED

Vulnerability data updated via NVD.

September 02, 2026 MODIFIED

Vulnerability data updated via NVD.

September 02, 2026 MODIFIED

Vulnerability data updated via NVD.

September 02, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Stack

No specific products linked.