CVE-2025-66467
High
Description
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.
SeverityHigh
CVSS8.0
Exploit probability—
Product
Apache Cloudstack
PublishedMay 8, 2026
First seenMay 8, 2026
Weakness typeCWE-459CWE-459
How to fix
Update
- apache cloudstack4.20.3.0, 4.22.0.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache cloudstack | 4.19.0.0 ≤ v < 4.20.3.0, 4.21.0.0 ≤ v < 4.22.0.1 | 4.20.3.0, 4.22.0.1 |
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