FKIE_CVE-2026-50266

Vulnerability from fkie_nvd - Published: 2026-06-04 17:16 - Updated: 2026-06-04 19:15
Severity
2.2 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
Summary
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).
References
cve@mitre.orghttps://launchpad.net/bugs/2152115
cve@mitre.orghttps://review.opendev.org/990273
cve@mitre.orghttps://review.opendev.org/990353
cve@mitre.orghttps://review.opendev.org/990356
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2026/06/04/6
134c704f-9b21-4f2e-91b3-4a467353bcc0https://bugs.launchpad.net/neutron/+bug/2152115
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "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)."
    }
  ],
  "id": "CVE-2026-50266",
  "lastModified": "2026-06-04T19:15:17.327",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 1.4,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-04T17:16:33.517",
  "references": [
    {
      "source": "cve@mitre.org",
      "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://bugs.launchpad.net/neutron/+bug/2152115"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}


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