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CVE-2026-40213

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，该漏洞源于多个API端点使用rule:allow作为默认策略，可能导致任何持有有效Keystone令牌的请求无条件授权。

CVSS 7.4 · High EPSS 0.33% · P24

Affected Version Matrix 3

VendorProduct Version RangeStatus
OpenStack Cyborg 5.0.0< 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-2026-40213

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OpenStack Cyborg before 16.0.1 uses rule:allow (check_str='@') as the default policy for multiple API endpoints. This unconditionally authorizes any request carrying a valid Keystone token regardless of roles, project membership, or scope. An authenticated user with zero role assignments can complete various actions such as reprogramming FPGA bitstreams on arbitrary compute nodes via agent RPC.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
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，该漏洞源于多个API端点使用rule:allow作为默认策略，可能导致任何持有有效Keystone令牌的请求无条件授权。
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 5.0.0 ~ 14.0.1 -

II. Public POCs for CVE-2026-40213

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III. Intelligence Information for CVE-2026-40213

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Vendor Advisories for CVE-2026-40213 (2)

Mailing List Discussions for CVE-2026-40213 (1)

IV. Related Vulnerabilities

Same product: Cyborg
Same vendor: OpenStack
Same weakness: CWE-863

V. Comments for CVE-2026-40213

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