CVE-2026-40213
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 3 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 14.0.0-3+deb13u1 |
| sid | Fixed | 16.0.0+git+2026.04.26.b8edfa06f1-1 |
| forky | Fixed | 16.0.0+git+2026.04.26.b8edfa06f1-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | openstack-cyborg | <16.0.1 | 16.0.1 |
| PIP | openstack-cyborg | < 16.0.1 | 16.0.1 |
References
- https://bugs.launchpad.net/openstack-cyborg/+bug/2143263
- https://security.openstack.org/ossa/OSSA-2026-011.html
- https://www.openwall.com/lists/oss-security/2026/05/07/6
- https://nvd.nist.gov/vuln/detail/CVE-2026-40213
- https://github.com/openstack/cyborg
- https://security-tracker.debian.org/tracker/CVE-2026-40213
- https://github.com/advisories/GHSA-mm7j-mhhj-hj36
CWEs
CWE-863
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.