1. Home
  2. CVE Database
  3. CVE-2026-72640
MEDIUM · 6.5

CVE-2026-72640

The Elastic Cloud on Kubernetes (ECK) operator reads a list of secret references from an annotation on secrets it manages, and it accepts the namespace recorded in each reference without validating th...

Vulnerability Description

The Elastic Cloud on Kubernetes (ECK) operator reads a list of secret references from an annotation on secrets it manages, and it accepts the namespace recorded in each reference without validating that the reference is authorized for the resource being reconciled. A user whose Kubernetes permissions are limited to their own namespace can write that annotation, trigger a reconcile, and cause the operator to use its cluster-wide secret permissions to copy the contents of a secret from any other namespace into a secret the user can read.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
ElasticElastic Cloud On Kubernetes< 3.5.0

Related Weaknesses (CWE)

CWE-441

References

FAQ

What is CVE-2026-72640?

CVE-2026-72640 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The Elastic Cloud on Kubernetes (ECK) operator reads a list of secret references from an annotation on secrets it manages, and it accepts the namespace recorded in each reference without validating th...

How severe is CVE-2026-72640?

CVE-2026-72640 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-72640?

Check the references section above for vendor advisories and patch information. Affected products include: Elastic Elastic Cloud On Kubernetes.