CVE-2026-55707

In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into their own subnetpool, mutating the victim's subnet state and altering L3 routing and address scop...

EUVD-2026-53046

In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into their own subnetpool, mutating the victim's subnet state and altering L3 routing and address scop...

CVE-2026-55707

CVE-2026-55707 affects OpenStack Neutron before 28.0.2. The subnetpool onboarding API (PUT /v2.0/subnetpools/{id}/onboard_network_subnets) does not verify subnet ownership, allowing an authenticated but lower-privileged user to onboard subnets from another project’s shared network into their own ...

CVE-2026-55707

In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into their own subnetpool, mutating the victim's subnet state and altering L3 routing and address scop...

CVE-2026-55707

In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into their own subnetpool, mutating the victim's subnet state and altering L3 routing and address scop...

PYSEC-2026-3491 OpenStack Neutron: Neutron port RBAC policy bypass allows project managers to set trusted device owners on shared networks

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 deviceowner to a value that has "network:" at the beginning "network:dhcp" for example. The default port RBAC policies incorrectly included PROJECTMANAGER without...

PYSEC-2026-2678 OpenStack Neutron has an Incorrect Authorization issue

In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags...

PYSEC-2026-1693 OpenStack Neutron can use an incorrect ID during policy enforcement

In OpenStack Neutron before 25.0.1, neutron/extensions/tagging.py can use an incorrect ID during policy enforcement. It does not apply the proper policy check for changing network tags. An unprivileged tenant is able to change add and clear tags on network objects that do not belong to the tenant...

PYSEC-2026-855 openstack-neutron uncontrolled resource consumption flaw

An uncontrolled resource consumption flaw was found in openstack-neutron. This flaw allows a remote authenticated user to query a list of security groups for an invalid project. This issue creates resources that are unconstrained by the user's quota. If a malicious user were to submit a significa...

PYSEC-2026-852 OpenStack Neutron Intended MAC-spoofing protection mechanism bypass

The IPTables firewall in OpenStack Neutron up to 7.0.4 and 8.x before 8.1.0 allows remote attackers to bypass an intended MAC-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via 1 a crafted DHCP discovery message or 2 crafted non-IP traffic...

PYSEC-2026-853 OpenStack Neutron Race condition vulnerability

Race condition in OpenStack Neutron before 2014.2.4 and 2015.1 before 2015.1.2, when using the ML2 plugin or the security groups AMQP API, allows remote authenticated users to bypass IP anti-spoofing controls by changing the device owner of a port to start with network: before the security group...

OpenStack Neutron Improper Input Validation vulnerability

OpenStack Neutron before 2014.2.4 juno and 2015.1.x before 2015.1.1 kilo, when using the IPTables firewall driver, allows remote authenticated users to cause a denial of service L2 agent crash by adding an address pair that is rejected by the ipset tool...

PYSEC-2026-854 OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended DHCP-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a crafted DHCP discovery message...

CVE-2026-50266

A flaw was found in OpenStack Neutron. A project manager can exploit this vulnerability by creating or updating a port on a shared network and setting the deviceowner to a specific value. This bypasses default access controls, allowing the project manager to obtain trusted network-service port...

CVE-2026-49299

A flaw was found in OpenStack Neutron. The tagging controller incorrectly enforces plural policy action names for single-tag write operations, while the defined policy rules use singular names. This mismatch allows a project reader to bypass intended policy restrictions, enabling them to create a...

Linux Distros Unpatched Vulnerability : CVE-2026-50266

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 deviceowner to a value th...

GHSA-QMC5-GV6V-8P22 OpenStack Neutron: Neutron port RBAC policy bypass allows project managers to set trusted device owners on shared networks

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 deviceowner to a value that has "network:" at the beginning "network:dhcp" for example. The default port RBAC policies incorrectly included PROJECTMANAGER without...

CVE-2026-50266

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 deviceowner to a value that has "network:" at the beginning "network:dhcp" for example. The default port RBAC policies incorrectly included PROJECTMANAGER without...

CVE-2026-50266

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 deviceowner to a value that has "network:" at the beginning "network:dhcp" for example. The default port RBAC policies incorrectly included PROJECTMANAGER without...

CVE-2026-50266

OpenStack Neutron before 28.0.1 is affected. A port on a shared network owned by another project can be created or updated by a project manager with device_owner starting with a network: prefix (e.g., network:dhcp). The default RBAC policies did not require network ownership, allowing access to t...