PYSEC-2026-856

    Dashboard / Vulnerabilities / PYSEC-2026-856

    PYSEC-2026-856

    Published: 6 Jul 2026Last Modified: 21 Jul 2026

    Summary: OpenStack Neutron Improper Input Validation vulnerability

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2015-3221, https://access.redhat.com/errata/RHSA-2015:1680, https://access.redhat.com/security/cve/CVE-2015-3221, https://bugs.launchpad.net/neutron/+bug/1461054, https://bugzilla.redhat.com/show_bug.cgi?id=1232284, https://git.openstack.org/cgit/openstack/neutron/commit/?id=9ff6138c47c95034ba845e9448ddffd147b51f38, https://opendev.org/openstack/neutron, https://web.archive.org/web/20200228084753/http://www.securityfocus.com/bid/75368, http://lists.openstack.org/pipermail/openstack-announce/2015-June/000377.html, http://rhn.redhat.com/errata/RHSA-2015-1680.html, https://pypi.org/project/neutron, https://github.com/advisories/GHSA-wf44-4mgj-rwvx

    Affected packages

    Package

    Name: neutron

    Purl: pkg:pypi/neutron

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2014.2.4

    Affected versions

    0.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2026-856 | CVE-DB