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

26 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) En OpenStack Cyborg antes de 16.0.1, la API de Solicitud de Acelerador (ARQ) no aplica la propiedad del proyecto en ninguna capa. La columna project_id en la base de datos nunca se rellena (NULL para cada ARQ), las consultas a la base de datos no tienen filtrado por proyecto, y las comprobaciones de políticas son autorreferenciales (el decorador authorize_wsgi compara el project_id del llamador consigo mismo en lugar de con el recurso objetivo). Cualquier usuario autenticado no administrador puede completar varias acciones, como eliminar ARQs vinculadas a instancias de otros proyectos, también conocido como denegación de servicio entre inquilinos.

Information

Published : 2026-05-07 22:16

Updated : 2026-10-26 20:10

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

{"id": "CVE-2026-40214", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40214", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-08T13:56:29.773972Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "OpenStack", "product": "Cyborg", "versions": [{"status": "affected", "version": "3.0.0", "lessThan": "14.0.1", "versionType": "semver"}, {"status": "affected", "version": "15.0.0", "lessThan": "15.0.1", "versionType": "semver"}, {"status": "affected", "version": "16.0.0", "lessThan": "16.0.1", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-07T22:16:35.047", "references": [{"url": "https://bugs.launchpad.net/openstack-cyborg/+bug/2144056", "source": "cve@mitre.org"}, {"url": "https://security.openstack.org/ossa/OSSA-2026-011.html", "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2026/05/07/6", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-282"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "En OpenStack Cyborg antes de 16.0.1, la API de Solicitud de Acelerador (ARQ) no aplica la propiedad del proyecto en ninguna capa. La columna project_id en la base de datos nunca se rellena (NULL para cada ARQ), las consultas a la base de datos no tienen filtrado por proyecto, y las comprobaciones de pol\u00edticas son autorreferenciales (el decorador authorize_wsgi compara el project_id del llamador consigo mismo en lugar de con el recurso objetivo). Cualquier usuario autenticado no administrador puede completar varias acciones, como eliminar ARQs vinculadas a instancias de otros proyectos, tambi\u00e9n conocido como denegaci\u00f3n de servicio entre inquilinos."}], "lastModified": "2026-10-26T20:10:00.160", "sourceIdentifier": "cve@mitre.org"}