{"id":"CVE-2026-40214","aliases":["PYSEC-2026-2854"],"url":"https://o3.security/vulnerability/CVE-2026-40214","summary":"OpenStack Cyborg's Accelerator Request (ARQ) API does not enforce project ownership at any layer","details":"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.","published":"2026-05-08T00:31:34Z","modified":"2026-07-13T16:43:00.625217437Z","cvss":{"score":6.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.00206,"percentile":0.10585,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"openstack-cyborg","fixedVersion":"16.0.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40214"},{"type":"WEB","url":"https://bugs.launchpad.net/openstack-cyborg/+bug/2144056"},{"type":"PACKAGE","url":"https://github.com/openstack/cyborg"},{"type":"WEB","url":"https://security.openstack.org/ossa/OSSA-2026-011.html"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2026/05/07/6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-13T16:43:00.625217437Z"}}