---
id: CVE-2026-104615
title: >-
  Cluster identity takeover in Fleet cluster registration allows access to
  another cluster's Fleet namespace
summary: >-
  A security vulnerability was discovered in SUSE Rancher Fleet's cluster
  registration flow, in Fleet versions before 0.12, 0.13.0 up to 0.13.17, 0.14.0
  up to 0.14.12, 0.15.0 up t o 0.15.17 and 0.16.0 up to 0.16.3. The cluster
  identity cla…
severity: high
cvss: 7.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-290
vendor: SUSE
product: Fleett
affected:
  - Fleett >= 0.16.0 < 0.16.3
  - Fleett >= 0.15.0. < 0.15.17
  - Fleett >= 0.14.0 < 0.14.12
  - Fleett >= 0.13 < 0.13.17
  - Fleett <= 0.12
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T15:49:01.402Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-104615'
references:
  - url: 'https://github.com/rancher/fleet/security/advisories/GHSA-gx8v-2929-9q95'
tags:
  - cve.org
epss: 0.00221
epssPercentile: 0.12826
ingestedAt: '2026-11-05T16:07:30.482Z'
---

## Overview

A security vulnerability was discovered in SUSE Rancher Fleet's cluster registration flow, in Fleet versions before 0.12, 0.13.0 up to 0.13.17, 0.14.0 up to 0.14.12, 0.15.0 up t o 0.15.17 and 0.16.0 up to 0.16.3. The cluster identity claimed by a registration request was accepted without being bound to the registration token that the request was made with. As a result, a registration request could be associated with a managed cluster that was originally registered with a different registration token.

## Affected

- `Fleett >= 0.16.0 < 0.16.3`
- `Fleett >= 0.15.0. < 0.15.17`
- `Fleett >= 0.14.0 < 0.14.12`
- `Fleett >= 0.13 < 0.13.17`
- `Fleett <= 0.12`

## Remediation

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