CVE-2025-66171

published 2026-05-08

CVE-2025-66171: The CloudStack Backup plugin has an improper access logic in versions 4.21.0.0 and 4.22.0.0. Anyone with authenticated user-account access in CloudStack…

Priority P3 44 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C H I N A N

The CloudStack Backup plugin has an improper access 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 have access to specific APIs can create new VMs using backups of any other user of the environment.

Backup plugin users using CloudStack 4.21.0.0+ are recommended to upgrade to CloudStack version 4.22.0.1, which fixes this issue.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apache	cloudstack	>= 4.21.0.0 < 4.22.0.1	4.22.0.1
apache_software_foundation	apache_cloudstack	4.21.0.0 – 4.22.0.0	—

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CWE-359