{
    "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"
                }
            }
        ]
    }
}