Symlink Attack Affecting k8s.io/kubernetes/pkg/volume/util/subpath package, versions <1.34.12>=1.35.0 <1.35.9>=1.36.0 <1.36.5>=1.37.0 <1.37.1


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.43% (37th percentile)

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  • Snyk IDSNYK-GOLANG-K8SIOKUBERNETESPKGVOLUMEUTILSUBPATH-21817110
  • published29 Oct 2026
  • disclosed27 Oct 2026

Introduced: 27 Oct 2026

NewCVE-2026-76654  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade k8s.io/kubernetes/pkg/volume/util/subpath to version 1.34.12, 1.35.9, 1.36.5, 1.37.1 or higher.

Overview

Affected versions of this package are vulnerable to Symlink Attack via the subPath symlink resolver in the Windows kubelet. An attacker can obtain the NetNTLMv2 hash of the account running kubelet by supplying a pod volumeMount subPath that is a symbolic link to an attacker-controlled UNC network share; the kubelet follows the target and automatically sends its credentials over SMB. The attacker can attempt to crack the hash or relay it to impersonate a domain-joined node.

Notes

  • At the pod-submission step, the attacker needs high Kubernetes privileges to create a pod with the crafted volumeMount on an affected Windows node.

CVSS Base Scores

version 4.0
version 3.1