---
cve: "CVE-2026-40214"
severity: "MEDIUM"
cvss: 6.3
epss: "21%"
vendor: "OpenStack"
kev: false
exploited: false
published: "2026-05-07 00:00:00"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T10:30:52+02:00"
---

# CVE-2026-40214

> 6.3 MEDIUM

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Gering | warn |

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40214) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_