CVE-2026-40214Medium· 6.3▾ SunlitOpenStack Cyborg's Accelerator Request (ARQ) API does not enforce project ownership at any layer
▾ Sunlit zone — Low / medium · no exploitation signal
impact 34.7 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.2%
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.
openstack-cyborg < 16.0.1Upgrade to a patched release:
openstack-cyborg 16.0.1Connected by shared product, vendor, weakness, or advisory.