CVE-2025-66170 Apache CloudStack: Any user can list backups that they should not have access to

What is CVE-2025-66170?

CVE-2025-66170 is a medium-severity missing authorization vulnerability in Apache Cloudstack, published on 8 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The CloudStack Backup plugin has an improper authorization logic in versions 4.21.0.0 and 4.22.0.0. Anyone with authenticated user-account access in CloudStack 4.21.0.0+ environments, where this plugin is enabled and has access to specific APIs can list backups from any account in the environment. This vulnerability does not allow them to see the contents of the backup.

Users are recommended to upgrade to version 4.22.0.1, which fixes the issue.

Weakness: CWE-863

Which versions are affected by CVE-2025-66170?

It affects 1 product.

Products include Apache Cloudstack.

How do I fix CVE-2025-66170?

No fix has been published for CVE-2025-66170 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-66170 being exploited?

There is no known exploitation of CVE-2025-66170 in the wild and no public exploit code.

Other vulnerabilities in Apache Cloudstack

• CVE-2012-4501 Missing authorization in n/a Critical 10.0
• CVE-2024-38346 Apache CloudStack: Unauthenticated cluster service port leads to remote execution Critical 9.8
• CVE-2024-39864 Apache CloudStack: Integration API service uses dynamic port when disabled Critical 9.8
• CVE-2024-29006 Apache CloudStack: x-forwarded-for HTTP header parsed by default Critical 9.8
• CVE-2022-35741 Apache CloudStack SAML Single Sign-On XXE Critical 9.8

All Apache Cloudstack vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-7p28-jcmx-86m5.