CVE-2026-50266

CVSS Score & Metrics

Base Score

2.2 / 10

Vector String

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

Vulnerability Description

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).

Vulnerability Details

Published Date

June 04, 2026

Last Modified

June 04, 2026

CWE ID

CWE-863

Source

NVD

Vendor

OpenStack

Product

Neutron

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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