CVE-2026-40214

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 v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-07 22:16

Updated : 2026-06-17 10:44

NVD link : CVE-2026-40214

Mitre link : CVE-2026-40214

CVE.ORG link : CVE-2026-40214

JSON object : View

Products Affected

No product.

CWE

CWE-282

Improper Ownership Management

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