High severity8.1NVD Advisory· Published May 8, 2026· Updated May 12, 2026
CVE-2025-66172
CVE-2025-66172
Description
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.
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 products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- www.openwall.com/lists/oss-security/2026/05/09/3nvdMailing ListThird Party Advisory
- lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xmnvdMailing ListThird Party Advisory
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