# CVE-2026-40214

## Summary

- **CVE ID:** CVE-2026-40214
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
- **CWE:** CWE-282
- **Published:** May 7, 2026
- **Last Modified:** May 8, 2026

## 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.

## Affected Products

- OpenStack — Cyborg (3.0.0)
- OpenStack — Cyborg (15.0.0)
- OpenStack — Cyborg (16.0.0)

## References

- [CNA](https://bugs.launchpad.net/openstack-cyborg/+bug/2144056)
- [CNA](https://www.openwall.com/lists/oss-security/2026/05/07/6)
- [CNA](https://security.openstack.org/ossa/OSSA-2026-011.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 10.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._