{"schema_version": "1.6.1", "id": "CVE-2025-66172", "summary": "Any user can attach a volume in their VMs from backups they should not have access to", "details": "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 restore a volume from any other user's backups and attach the volume to their own VMs.\n\nBackup plugin users using CloudStack 4.21.0.0+ are recommended to upgrade to CloudStack version 4.22.0.1, which fixes this issue.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "4.21.0.0"}, {"last_affected": "4.21.0.0"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm"}]}