---
id: CVE-2026-94290
title: >-
  Privilege escalation to cluster-admin on the Rancher local cluster through
  Fleet's agent management controller
summary: >-
  SUSE Rancher Fleet clusters reference a kubeconfig secret that the controller
  uses to install and manage a Fleet agent on the target cluster. The controller
  did not sufficiently restrict which kubeconfig secrets a Fleet Cluster object
  wa…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-250
vendor: SUSE
product: Fleet
affected:
  - Fleet >= 0.16.0 < 0.16.3
  - Fleet >= 0.15.0 < 0.15.8
  - Fleet >= 0.14.0 < 0.14.12
  - Fleet >= 0.13.0 < 0.13.17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-02T00:00:00+00:00'
published: '2026-11-02'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T04:55:52.658Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-94290'
references:
  - url: 'https://github.com/rancher/fleet/security/advisories/GHSA-qfmw-gw96-ffcr'
tags:
  - cve.org
epss: 0.00499
epssPercentile: 0.4293
ingestedAt: '2026-11-05T19:30:42.907Z'
---

## Overview

SUSE Rancher Fleet clusters reference a kubeconfig secret that the controller uses to install and manage a Fleet agent on the target cluster. The controller did not sufficiently restrict which kubeconfig secrets a Fleet Cluster object was allowed to reference. As a result, a Fleet cluster defined in a namespace an ordinary user controls could be associated with administrative credentials for the management cluster itself, causing the controller to manage the management cluster on that user's behalf and to run that user's Fleet content there with elevated privileges. This affects SUSE Rancher Fleet 0.16.0 up to 0.16.3, 0.15.0 up to 0.15.8, 0.14.0 up to 0.14.12, 0.13.0 up to 0.13.17 and possible older versions.

## Affected

- `Fleet >= 0.16.0 < 0.16.3`
- `Fleet >= 0.15.0 < 0.15.8`
- `Fleet >= 0.14.0 < 0.14.12`
- `Fleet >= 0.13.0 < 0.13.17`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.