{"id":"PYSEC-2026-854","summary":"OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism","details":"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.","aliases":["CVE-2016-5362","GHSA-qpwc-p365-pqrr"],"modified":"2026-07-07T11:45:41.889746896Z","published":"2026-07-06T08:03:23.728206Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-5362"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2016:1473"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2016:1474"},{"type":"WEB","url":"https://bugs.launchpad.net/neutron/+bug/1558658"},{"type":"PACKAGE","url":"https://github.com/openstack/neutron"},{"type":"WEB","url":"https://review.openstack.org/#/c/300202"},{"type":"WEB","url":"https://review.openstack.org/#/c/303563"},{"type":"WEB","url":"https://review.openstack.org/#/c/303572"},{"type":"WEB","url":"https://security.openstack.org/ossa/OSSA-2016-009.html"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2016/06/10/5"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2016/06/10/6"},{"type":"PACKAGE","url":"https://pypi.org/project/neutron"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-qpwc-p365-pqrr"}],"affected":[{"package":{"name":"neutron","ecosystem":"PyPI","purl":"pkg:pypi/neutron"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.5"},{"introduced":"8.0.0"},{"fixed":"8.1.1"}]}],"versions":["0.0"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/neutron/PYSEC-2026-854.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"}]}