{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50266","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","state":"PUBLISHED","assignerShortName":"mitre","dateReserved":"2026-06-04T16:18:38.592Z","datePublished":"2026-06-04T16:18:39.167Z","dateUpdated":"2026-06-04T17:28:01.143Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Neutron","repo":"https://opendev.org/openstack/neutron","vendor":"OpenStack","versions":[{"lessThan":"25.2.4","status":"affected","version":"25.0.0","versionType":"semver"},{"lessThan":"26.0.4","status":"affected","version":"26.0.0","versionType":"semver"},{"lessThan":"27.0.3","status":"affected","version":"27.0.0","versionType":"semver"},{"lessThan":"28.0.1","status":"affected","version":"28.0.0","versionType":"semver"}]}],"descriptions":[{"lang":"en","value":"In OpenStack Neutron before 28.0.1, a project manager can create or update a port on a shared network owned by another project and set device_owner to a value that has \"network:\" at the beginning (\"network:dhcp\" for example). The default port RBAC policies incorrectly included PROJECT_MANAGER without requiring network ownership, allowing any project manager to obtain trusted network-service port behavior on shared networks. Depending on backend and deployment, this can bypass anti-spoofing and security group protections, enabling DHCP, MAC, or IP spoofing against other tenants on the shared network. This is a regression of CVE-2015-5240 (OSSA-2015-018)."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":2.2,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2026-06-04T16:18:39.167Z"},"references":[{"tags":["issue-tracking"],"url":"https://launchpad.net/bugs/2152115"},{"tags":["patch"],"url":"https://review.opendev.org/990273"},{"tags":["patch"],"url":"https://review.opendev.org/990353"},{"tags":["patch"],"url":"https://review.opendev.org/990356"},{"url":"https://www.openwall.com/lists/oss-security/2026/06/04/6"}],"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*","versionStartIncluding":"25.0.0","versionEndExcluding":"25.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*","versionStartIncluding":"26.0.0","versionEndExcluding":"26.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*","versionStartIncluding":"27.0.0","versionEndExcluding":"27.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*","versionStartIncluding":"28.0.0","versionEndExcluding":"28.0.1"}]}]}]},"adp":[{"references":[{"url":"https://bugs.launchpad.net/neutron/+bug/2152115","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-04T17:27:57.789824Z","id":"CVE-2026-50266","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-04T17:28:01.143Z"}}]}}