Cloudanix VulnDB

CVE-2026-50266

Low · 2.2

CVSS

2.2

EPSS

0.4%

Published

Jun 4, 2026

CISA due date

—

The record

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).

Affected packages

Ecosystem Package Introduced Fixed

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