Unintended Proxy or Intermediary ('Confused Deputy') Affecting github.com/kubernetes/kubernetes/pkg/controller/statefulset package, versions >=1.34.0 <1.34.12>=1.35.0-alpha.0 <1.35.9>=1.36.0-alpha.0 <1.36.5>=1.37.0-alpha.0 <1.37.1>=1.38.0-alpha.0 <1.38.0-alpha.1


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.43% (38th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMKUBERNETESKUBERNETESPKGCONTROLLERSTATEFULSET-22283250
  • published8 Nov 2026
  • disclosed27 Oct 2026
  • creditImanOracle

Introduced: 27 Oct 2026

NewCVE-2026-2270  (opens in a new tab)
CWE-441  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade github.com/kubernetes/kubernetes/pkg/controller/statefulset to version 1.34.12, 1.35.9, 1.36.5, 1.37.1, 1.38.0-alpha.1 or higher.

Overview

github.com/kubernetes/kubernetes/pkg/controller/statefulset is a Production-Grade Container Scheduling and Management

Affected versions of this package are vulnerable to Unintended Proxy or Intermediary ('Confused Deputy') via the ApplyRevision function in the StatefulSet controller. An attacker with namespace-scoped write permissions on StatefulSet and ControllerRevision objects can supply crafted revision data that changes the restored StatefulSet’s namespace and metadata, causing the controller to create a cross-namespace pod whose metadata and specification the attacker controls. The garbage collector immediately deletes the pod unless the attacker can construct a valid StatefulSet OwnerReference using the UID of an existing StatefulSet in the victim namespace.

CVSS Base Scores

version 4.0
version 3.1