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CVE-2026-50266

Estado: Pendiente de análisisBaja (2.2)—

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).

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Openstack — NeutronAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-50266",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-50266",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-04T17:27:57.789824Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 2.2,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 0.7
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "repo": "https://opendev.org/openstack/neutron",
          "vendor": "OpenStack",
          "product": "Neutron",
          "versions": [
            {
              "status": "affected",
              "version": "25.0.0",
              "lessThan": "25.2.4",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "26.0.0",
              "lessThan": "26.0.4",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "27.0.0",
              "lessThan": "27.0.3",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "28.0.0",
              "lessThan": "28.0.1",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-06-04T17:16:33.517",
  "references": [
    {
      "url": "https://launchpad.net/bugs/2152115",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://review.opendev.org/990273",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://review.opendev.org/990353",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://review.opendev.org/990356",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2026/06/04/6",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugs.launchpad.net/neutron/+bug/2152115",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "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)."
    },
    {
      "lang": "es",
      "value": "En OpenStack Neutron anterior a 28.0.1, un gestor de proyectos puede crear o actualizar un puerto en una red compartida propiedad de otro proyecto y establecer device_owner a un valor que tenga 'network:' al principio ('network:dhcp' por ejemplo). Las políticas RBAC de puerto predeterminadas incluyeron incorrectamente a PROJECT_MANAGER sin requerir la propiedad de la red, permitiendo a cualquier gestor de proyectos obtener un comportamiento de puerto de servicio de red de confianza en redes compartidas. Dependiendo del backend y la implementación, esto puede eludir las protecciones anti-spoofing y de grupos de seguridad, permitiendo la suplantación de DHCP, MAC o IP contra otros inquilinos en la red compartida. Esto es una regresión de CVE-2015-5240 (OSSA-2015-018)."
    }
  ],
  "lastModified": "2026-07-22T20:10:00.127",
  "sourceIdentifier": "cve@mitre.org"
}