CVE-2026-66722 Apache CloudStack: ProjectRole & ProjectRolePermission authorization issue

High 7.2 Published 21 Aug 2026 Updated 25 Aug 2026

Domain admins can modify project roles and permissions in unrelated domains due to missing ownership checks, requiring an upgrade to fix.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-66722?

CVE-2026-66722 is a high-severity missing authorization vulnerability in Apache Cloudstack, published on 21 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Improper authorization for CRUD operations on Project Roles and Project Role permissions for domain admins in CloudStack.

A Domain Admin can create, update, delete, and list project roles and project role permissions for projects in any domain, not just their own. The check only confirms the caller is a Domain Admin, without verifying whether the target project belongs to their domain or subdomain. This allows a malicious Domain Admin to tamper with project roles and permissions across unrelated domains.

This issue affects Apache CloudStack: from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Weakness: CWE-285

Which versions are affected by CVE-2026-66722?

It affects 1 product.

Products include Apache Cloudstack.

How do I fix CVE-2026-66722?

No fix has been published for CVE-2026-66722 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-2026-66722 being exploited?

There is no known exploitation of CVE-2026-66722 in the wild and no public exploit code.

All Apache Cloudstack vulnerabilities

Sources

Also known as GHSA-v9cm-qf9w-m6c3.