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CVE-2026-40213

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e8645905d004451aa649695105c858bee22307860762e0e5f6f3653e36cc039a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Cyborg","vendor":"OpenStack","versions":[{"lessThan":"14.0.1","status":"affected","version":"5.0.0","versionType":"semver"},{"lessThan":"15.0.1","status":"affected","version":"15.0.0","versionType":"semver"},{"lessThan":"16.0.1","status":"affected","version":"16.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://bugs.launchpad.net/openstack-cyborg/+bug/2143263"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/references/0
{"url":"https://security.openstack.org/ossa/OSSA-2026-011.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/references/2
{"url":"https://www.openwall.com/lists/oss-security/2026/05/07/6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:424e21bc3c005bda2c69371b56456a6255e5b3a3e6f0c87c873e9a75ed8f4d2a · sha256:2d86f8fd6a3095ce… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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