CVE-2026-40214
Medium
Description
In OpenStack Cyborg before 16.0.1, the Accelerator Request (ARQ) API does not enforce project ownership at any layer. The project_id column in the database is never populated (NULL for every ARQ), database queries have no project filtering, and policy checks are self-referential (the authorize_wsgi decorator compares the caller's project_id with itself rather than the target resource). Any authenticated non-admin user can complete various actions such as deleting ARQs bound to other projects' instances, aka cross-tenant denial of service.
SeverityMedium
CVSS6.3
Exploit probability—
ProductOpenstack-cyborg
PublishedMay 7, 2026
First seenMay 7, 2026
Weakness typeCWE-282CWE-282
How to fix
Update
- openstack-cyborg16.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openstack-cyborgPyPI | v < 16.0.1 | 16.0.1 |
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