High severity · published Aug 21, 2026
CVE-2026-66722
Apache CloudStack: ProjectRole & ProjectRolePermission authorization issue
7.2
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache CloudStack · Apache Software Foundation
4.15.0.0 through 4.20.3.0; 4.21.0.0 through 4.22.1.0 · source: vendor
CL
Cloudstack · Apache
4.15.0.0 before 4.20.3.1; 4.21.0.0 before 4.22.1.1 · source: NVD
Affected product
AC
Apache CloudStack
Apache Software Foundation
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