PYSEC-2026-862

    Dashboard / Vulnerabilities / PYSEC-2026-862

    PYSEC-2026-862

    Published: 6 Jul 2026Last Modified: 7 Jul 2026

    Summary: OpenStack Compute (Nova) Resource limit circumvention in Nova private flavors

    Details: The "create an instance" API in OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly enforce the os-flavor-access:is_public property, which allows remote authenticated users to boot arbitrary flavors by guessing the flavor id. NOTE: this issue is due to an incomplete fix for CVE-2013-2256.

    References: https://nvd.nist.gov/vuln/detail/CVE-2013-4278, https://github.com/openstack/nova/commit/4054cc4a22a1fea997dec76afb5646fd6c6ea6b9, https://github.com/openstack/nova/commit/6825959560e06725d26625fd21f5c0b78b305492, https://github.com/openstack/nova/commit/8b686195afe7e6dfb46c56c1ef2fe9c993d8e495, https://bugs.launchpad.net/ossa/+bug/1212179, https://github.com/openstack/nova, http://lists.openstack.org/pipermail/openstack-announce/2013-August/000138.html, http://rhn.redhat.com/errata/RHSA-2013-1199.html, https://pypi.org/project/nova, https://github.com/advisories/GHSA-43cm-73px-5v4m

    Affected packages

    Package

    Name: nova

    Purl: pkg:pypi/nova

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -12.0.0a0

    Affected versions

    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