Description
WebVirtCloud through commit bb920b0 contains a missing authorization vulnerability that allows low-privileged authenticated users to reach MigrateViewSet and CreateInstanceViewSet because no permission_classes are declared, so Django REST Framework defaults to AllowAny. Attackers can send requests to /api/v1/migrate/ or the compute instance create endpoint to migrate or undefine other users' virtual machines and create volumes and domains on any compute host.
Metrics
CVSS 3.1 8.1/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| retspen | webvirtcloud | bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3 |
References
- https://github.com/catborise/webvirtcloud/commit/1227674d8f5a5230e5c654267773aca4ebc5c717
- https://github.com/retspen/webvirtcloud
- https://github.com/retspen/webvirtcloud/blob/bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3/instances/api/viewsets.py#L125-L162
- https://github.com/retspen/webvirtcloud/blob/bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3/instances/api/viewsets.py#L174-L183
- https://github.com/retspen/webvirtcloud/issues/689
- https://hackmd.io/@hieuPenguinnn/webvirtcloud-api-missing-authz-migrate-create
- https://www.vulncheck.com/advisories/webvirtcloud-through-commit-bb920b0-missing-authorization-in-rest-api-migrate-and-create-endpoints
Timeline
- Published
- Nov 4, 2026
- Last modified
- Nov 9, 2026
- NVD status
- Deferred