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3 vulnerabilities found for Neutron by OpenStack
CVE-2026-55707 (GCVE-0-2026-55707)
Vulnerability from cvelistv5 – Published: 2026-08-05 04:44 – Updated: 2026-08-12 19:23
VLAI
EPSS
VEX
Summary
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 scope behavior for victim routers.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:00 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
mitre
CNA
References
5 references
| URL | Tags |
|---|---|
| https://launchpad.net/bugs/2152113 | issue-tracking |
| https://security.openstack.org/ossa/OSSA-2026-032.html | vendor-advisory |
| https://www.openwall.com/lists/oss-security/2026/… | vendor-advisorymailing-list |
| http://www.openwall.com/lists/oss-security/2026/07/29/5 | |
| https://lists.debian.org/debian-lts-announce/2026… |
Impacted products
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CVE-2026-50266 (GCVE-0-2026-50266)
Vulnerability from cvelistv5 – Published: 2026-06-04 16:18 – Updated: 2026-06-04 17:28
VLAI
EPSS
VEX
Summary
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
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 17:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
mitre
CNA
References
6 references
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) cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* |
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CVE-2026-49299 (GCVE-0-2026-49299)
Vulnerability from cvelistv5 – Published: 2026-05-28 21:53 – Updated: 2026-06-02 17:33
VLAI
EPSS
VEX
Summary
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 on same-project resources. Deployments running Neutron 26.0.0 or later are affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 14:04 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
mitre
CNA
References
Impacted products
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