CVE-2026-42876

MediumCVSS 4.9/10Last modified Jun 17, 2026

Description

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.1, a user who only has permission to create ExternalSecret resources can cause the operator to create a Secret that Kubernetes will automatically populate with a long-lived token for the specified service account. This effectively allows the user to impersonate any service account in the namespace without needing direct create permissions on TokenRequest or Secrets of that type. This vulnerability is fixed in 2.4.1.

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-285

Affected software

No affected versions have been published.

Timeline

Published: May 11, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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