CVE-2026-50266

{"id": "CVE-2026-50266", "cveTags": [], "metrics": {"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}]}, "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)."}], "lastModified": "2026-06-04T19:15:17.327", "sourceIdentifier": "cve@mitre.org"}