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CVE-2026-40214

Quick assessment

Affected
OpenStack Cyborg
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenStack Cyborg是OpenStack开源的一个加速器资源管理与调度服务组件。 OpenStack Cyborg 16.0.1之前版本存在安全漏洞，该漏洞源于加速器请求API未强制执行项目所有权，可能导致认证用户删除其他项目实例绑定的ARQ。

CVSS 6.3 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 3

VendorProduct Version RangeStatus
OpenStack Cyborg 3.0.0< 14.0.1 affected
15.0.0< 15.0.1 affected
16.0.0< 16.0.1 affected
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I. Basic Information for CVE-2026-40214

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
属主管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenStack Cyborg 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenStack Cyborg是OpenStack开源的一个加速器资源管理与调度服务组件。 OpenStack Cyborg 16.0.1之前版本存在安全漏洞，该漏洞源于加速器请求API未强制执行项目所有权，可能导致认证用户删除其他项目实例绑定的ARQ。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenStack Cyborg 3.0.0 ~ 14.0.1 -

II. Public POCs for CVE-2026-40214

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III. Intelligence Information for CVE-2026-40214

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Vendor Advisories for CVE-2026-40214 (2)

Mailing List Discussions for CVE-2026-40214 (1)

IV. Related Vulnerabilities

Same product: Cyborg
Same vendor: OpenStack
Same weakness: CWE-282

V. Comments for CVE-2026-40214

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