---
id: CVE-2025-66467
title: >-
  Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows
  users to retain access to buckets which they previously owned
summary: >-
  Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows
  users to retain access to buckets which they previously owned. If another user
  creates a new bucket with the same name, the previous owners can gain
  unauthorize…
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-459
vendor: apache
product: cloudstack
affected:
  - 'cloudstack >= 4.19.0.0, < 4.20.3.0'
  - 'cloudstack >= 4.21.0.0, < 4.22.0.1'
patched:
  - cloudstack 4.22.0.1
published: '2026-05-08'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T22:10:00.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66467'
references:
  - url: 'https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/05/09/4'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00373
epssPercentile: 0.28797
ingestedAt: '2026-09-30T22:27:27.785Z'
---

## Overview

Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows users to retain access to buckets which they previously owned. If another user creates a new bucket with the same name, the previous owners can gain unauthorized read and write access to it by using the previously generated access and secret keys.

Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.

## Affected

- `cloudstack >= 4.19.0.0, < 4.20.3.0`
- `cloudstack >= 4.21.0.0, < 4.22.0.1`

## Remediation

Upgrade past the affected range:

- `cloudstack 4.22.0.1`