Vulnerability-Lookup

PYSEC-2026-3491

Vulnerability from pysec - Published: 2026-07-23 11:41 - Updated: 2026-07-23 14:31

Details

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).

Severity

2.2 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

Impacted products

Name	purl
neutron	pkg:pypi/neutron

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron",
        "purl": "pkg:pypi/neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "28.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0",
        "10.0.5",
        "10.0.6",
        "10.0.7",
        "11.0.3",
        "11.0.4",
        "11.0.5",
        "11.0.6",
        "11.0.7",
        "11.0.8",
        "12.0.0",
        "12.0.0.0b3",
        "12.0.0.0rc1",
        "12.0.0.0rc2",
        "12.0.1",
        "12.0.2",
        "12.0.3",
        "12.0.4",
        "12.0.5",
        "12.0.6",
        "12.1.0",
        "12.1.1",
        "13.0.0",
        "13.0.0.0b1",
        "13.0.0.0b2",
        "13.0.0.0b3",
        "13.0.0.0rc1",
        "13.0.0.0rc2",
        "13.0.1",
        "13.0.2",
        "13.0.3",
        "13.0.4",
        "13.0.5",
        "13.0.6",
        "13.0.7",
        "14.0.0",
        "14.0.0.0b1",
        "14.0.0.0b2",
        "14.0.0.0b3",
        "14.0.0.0rc1",
        "14.0.1",
        "14.0.2",
        "14.0.3",
        "14.0.4",
        "14.1.0",
        "14.2.0",
        "14.3.0",
        "14.3.1",
        "14.4.0",
        "14.4.1",
        "14.4.2",
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        "15.0.0.0rc2",
        "15.0.1",
        "15.0.2",
        "15.1.0",
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        "15.3.0",
        "15.3.1",
        "15.3.2",
        "15.3.3",
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        "16.0.0",
        "16.0.0.0b1",
        "16.0.0.0rc1",
        "16.0.0.0rc2",
        "16.1.0",
        "16.2.0",
        "16.3.0",
        "16.3.1",
        "16.3.2",
        "16.4.0",
        "16.4.1",
        "16.4.2",
        "17.0.0",
        "17.0.0.0rc1",
        "17.0.0.0rc2",
        "17.1.0",
        "17.1.1",
        "17.1.2",
        "17.2.0",
        "17.2.1",
        "17.3.0",
        "17.4.0",
        "17.4.1",
        "18.0.0",
        "18.0.0.0rc1",
        "18.0.0.0rc2",
        "18.1.0",
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        "19.0.0.0rc1",
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        "19.2.0",
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        "19.4.0",
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        "19.6.0",
        "19.7.0",
        "20.0.0",
        "20.0.0.0rc1",
        "20.0.0.0rc2",
        "20.1.0",
        "20.2.0",
        "20.3.0",
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        "20.4.0",
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        "22.1.0",
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        "22.2.1",
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        "23.0.0.0b2",
        "23.0.0.0b3",
        "23.0.0.0rc1",
        "23.0.0.0rc2",
        "23.1.0",
        "23.2.0",
        "23.3.0",
        "23.4.0",
        "23.5.0",
        "24.0.0",
        "24.0.0.0b1",
        "24.0.0.0rc1",
        "24.0.0.0rc2",
        "24.0.1",
        "24.1.0",
        "24.2.0",
        "24.2.1",
        "24.2.2",
        "25.0.0",
        "25.0.0.0b1",
        "25.0.0.0rc1",
        "25.0.0.0rc2",
        "25.1.0",
        "25.2.0",
        "25.2.1",
        "25.2.2",
        "25.2.3",
        "26.0.0",
        "26.0.0.0b1",
        "26.0.0.0b2",
        "26.0.0.0rc1",
        "26.0.0.0rc2",
        "26.0.1",
        "26.0.2",
        "26.0.3",
        "26.0.4",
        "26.0.5",
        "27.0.0",
        "27.0.0.0b1",
        "27.0.0.0rc1",
        "27.0.1",
        "27.0.2",
        "27.0.3",
        "28.0.0",
        "28.0.0.0b1",
        "28.0.0.0b2",
        "28.0.0.0rc1",
        "28.0.0.0rc2"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50266",
    "GHSA-qmc5-gv6v-8p22"
  ],
  "details": "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": "PYSEC-2026-3491",
  "modified": "2026-07-23T14:31:51.531425Z",
  "published": "2026-07-23T11:41:38.956068Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50266"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/neutron/+bug/2152115"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openstack/neutron"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/2152115"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990273"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990353"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990356"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/06/04/6"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/neutron"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-qmc5-gv6v-8p22"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenStack Neutron: Neutron port RBAC policy bypass allows project managers to set trusted device owners on shared networks"
}

CVE-2026-50266 (GCVE-0-2026-50266)

Vulnerability from cvelistv5 – Published: 2026-06-04 16:18 – Updated: 2026-06-04 17:28

Summary

Severity

2.2 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

mitre

References

6 references

URL	Tags
https://launchpad.net/bugs/2152115	issue-tracking
https://review.opendev.org/990273	patch
https://review.opendev.org/990353	patch
https://review.opendev.org/990356	patch
https://www.openwall.com/lists/oss-security/2026/…
https://bugs.launchpad.net/neutron/+bug/2152115	exploit

Impacted products

1 product

Vendor	Product	Version
OpenStack	Neutron	Affected: 25.0.0 , < 25.2.4 (semver) Affected: 26.0.0 , < 26.0.4 (semver) Affected: 27.0.0 , < 27.0.3 (semver) Affected: 28.0.0 , < 28.0.1 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-50266",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-04T17:27:57.789824Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-04T17:28:01.143Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://bugs.launchpad.net/neutron/+bug/2152115"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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"
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              "lessThan": "26.0.4",
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              "lessThan": "27.0.3",
              "status": "affected",
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              "status": "affected",
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            }
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      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
            }
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      ],
      "descriptions": [
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          "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",
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              "description": "CWE-863 Incorrect Authorization",
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        },
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          "url": "https://review.opendev.org/990353"
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    "datePublished": "2026-06-04T16:18:39.167Z",
    "dateReserved": "2026-06-04T16:18:38.592Z",
    "dateUpdated": "2026-06-04T17:28:01.143Z",
    "state": "PUBLISHED"
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}

GHSA-QMC5-GV6V-8P22

Vulnerability from github – Published: 2026-06-04 18:30 – Updated: 2026-07-15 22:40

Summary

OpenStack Neutron: Neutron port RBAC policy bypass allows project managers to set trusted device owners on shared networks

Details

Severity

2.2 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "neutron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "28.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-15T22:40:05Z",
    "nvd_published_at": "2026-06-04T17:16:33Z",
    "severity": "LOW"
  },
  "details": "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": "GHSA-qmc5-gv6v-8p22",
  "modified": "2026-07-15T22:40:05Z",
  "published": "2026-06-04T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50266"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/neutron/+bug/2152115"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openstack/neutron"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/2152115"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990273"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990353"
    },
    {
      "type": "WEB",
      "url": "https://review.opendev.org/990356"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/06/04/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenStack Neutron: Neutron port RBAC policy bypass allows project managers to set trusted device owners on shared networks"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2026-3491

CVE-2026-50266 (GCVE-0-2026-50266)

GHSA-QMC5-GV6V-8P22

Tags

Sightings

Nomenclature