---
id: CVE-2026-93538
title: >-
  Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels
  during agent-initiated registration in Fleet
summary: "A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated\_cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such…"
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-290
  - CWE-639
vendor: SUSE
product: Fleet
affected:
  - Fleet >= 0.16.0 < 0.16.1
  - Fleet >= 0.15.0 < 0.15.6
  - Fleet >= 0.14.0 < 0.14.10
  - Fleet >= 0.13.0 < 0.13.15
  - Fleet >= 0.12.0 < 0.12.19
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T14:10:21.720Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-93538'
references:
  - url: 'https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr'
tags:
  - cve.org
ingestedAt: '2026-09-28T15:13:31.606Z'
---

## Overview

A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such as the cluster display name label, were applied to the resulting upstream Cluster object. Because Fleet resolves GitRepo and Bundle targets from those cluster labels, a party able to register a cluster into a Fleet workspace namespace shared with other tenants could cause its own cluster to satisfy targeting rules that administrators intended for a different cluster.
This affects SUSE Rancher Fleet 0.16 before 0.16.1, 0.15 before 0.15.6, 0.14 before 0.14.10, 0.13 before 0.13.15, 0.12 before 0.12.19 and older versions.

## Affected

- `Fleet >= 0.16.0 < 0.16.1`
- `Fleet >= 0.15.0 < 0.15.6`
- `Fleet >= 0.14.0 < 0.14.10`
- `Fleet >= 0.13.0 < 0.13.15`
- `Fleet >= 0.12.0 < 0.12.19`

## Remediation

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