High 7.4Published May 6, 2026

CVE-2026-40213OpenStack Cyborg before 16.0.1 uses rule:allow (check_str='@') as the default policy for multiple API endpoints.

Updated under an hour ago (Oct 27, 2026, 8:10 AM ET)

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It affects OpenStack Cyborg. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for OpenStack Cyborg

Exploited in the last 30 days

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.

CVSS: 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Awaiting Analysis
Record last updated: May 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OpenStack Cyborg openstack:cyborg (from the name)	from 5.0.0 before 14.0.1; from 15.0.0 before 15.0.1; from 16.0.0 before 16.0.1	CNA record

References

References

https://bugs.launchpad.net/openstack-cyborg/+bug/2143263
https://www.openwall.com/lists/oss-security/2026/05/07/6
https://security.openstack.org/ossa/OSSA-2026-011.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.