---
id: CVE-2026-75033
title: A flaw was found in Rancher Manager
summary: >-
  A flaw was found in Rancher Manager. Project Secrets were propagated into a
  namespace based only on its `field.cattle.io/projectId` annotation, without
  verifying that the referenced project belonged to the same downstream cluster.
  A user…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: suse
product: rancher
affected:
  - rancher < 2.15.1
patched:
  - rancher 2.15.1
published: '2026-09-03'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T14:56:19.560'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75033'
references:
  - url: 'https://github.com/rancher/rancher/releases/tag/v2.15.1'
    label: meissner@suse.de
tags:
  - nvd
epss: 0.0034
epssPercentile: 0.24816
ingestedAt: '2026-09-08T20:10:03.160Z'
---

## Overview

A flaw was found in Rancher Manager. Project Secrets were propagated into a namespace based only on its `field.cattle.io/projectId` annotation, without verifying that the referenced project belonged to the same downstream cluster. A user able to create namespaces on one cluster could set the annotation to a project ID from another cluster and have that project's secrets copied into a namespace under their control.


This issue affects Rancher: before 2.15.1.

## Affected

- `rancher < 2.15.1`

## Remediation

Upgrade past the affected range:

- `rancher 2.15.1`