Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck
CVE-2026-122224WebVirtCloud through commit bb920b0 Missing Authorization in REST API Migrate and Create Endpoints
High 8.1
In plain English
A high-severity missing authorization in webvirtcloud from retspen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| retspen | webvirtcloud | bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- https://github.com/retspen/webvirtcloud/issues/689 issue-tracking
- https://github.com/catborise/webvirtcloud/commit/1227674d8f5a5230e5c654267773aca4ebc5c717 patch
- https://github.com/retspen/webvirtcloud/blob/bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3/instances/api/viewsets.py#L125-L162 technical-description
- https://github.com/retspen/webvirtcloud/blob/bb920b0a7ffdf00c09e994dc2e45f05bc9ec1bb3/instances/api/viewsets.py#L174-L183 technical-description
- https://hackmd.io/@hieuPenguinnn/webvirtcloud-api-missing-authz-migrate-create technical-description
- https://github.com/retspen/webvirtcloud product
- VulnCheck Advisory: WebVirtCloud through commit bb920b0 Missing Authorization in REST API Migrate and Create Endpoints third-party-advisory