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.

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Fixes

Solution

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Workaround

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History

Thu, 07 May 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-07T21:57:41.910Z

Reserved: 2026-04-10T00:00:00.000Z

Link: CVE-2026-40213

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-07T22:16:34.910

Modified: 2026-05-07T22:16:34.910

Link: CVE-2026-40213

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses