---
id: CVE-2025-46599
aliases:
  - GHSA-864f-7xjm-2jp2
  - GO-2025-3646
title: CNCF K3s Kubernetes kubelet configuration exposes credentials
summary: CNCF K3s Kubernetes kubelet configuration exposes credentials
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N'
vendor: k3s-io
product: github.com/k3s-io/k3s
ecosystem: go
affected:
  - 'github.com/k3s-io/k3s >= 1.32.0-rc1, < 1.32.4-rc1'
patched:
  - github.com/k3s-io/k3s 1.32.4-rc1
published: '2025-04-25'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:23.716034197Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-864f-7xjm-2jp2'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-46599'
  - url: 'https://github.com/f1veT/BUG/issues/2'
  - url: 'https://github.com/k3s-io/k3s/issues/12164'
  - url: >-
      https://github.com/k3s-io/k3s/commit/097b63e588e3c844cdf9b967bcd0a69f4fc0aa0a
  - url: >-
      https://cloud.google.com/kubernetes-engine/docs/how-to/disable-kubelet-readonly-port
  - url: 'https://github.com/k3s-io/k3s'
  - url: 'https://github.com/k3s-io/k3s/compare/v1.32.3+k3s1...v1.32.4-rc1+k3s1'
  - url: 'https://pkg.go.dev/vuln/GO-2025-3646'
tags:
  - osv
  - go
epss: 0.00451
epssPercentile: 0.36441
ingestedAt: '2026-09-12T03:13:01.766Z'
---

## Overview

CNCF K3s 1.32 before 1.32.4-rc1+k3s1 has a Kubernetes kubelet configuration change with the unintended consequence that, in some situations, ReadOnlyPort is set to 10255. For example, the default behavior of a K3s online installation might allow unauthenticated access to this port, exposing credentials.

## Affected packages

- `github.com/k3s-io/k3s >= 1.32.0-rc1, < 1.32.4-rc1`

## Remediation

Upgrade to a patched release:

- `github.com/k3s-io/k3s 1.32.4-rc1`