{"id":"PYSEC-2026-874","summary":"OpenStack Nova DoS through ephemeral disk backing files","details":"The libvirt driver in OpenStack Compute (Nova) before 2013.2.2 and icehouse before icehouse-2 allows remote authenticated users to cause a denial of service (disk consumption) by creating and deleting instances with unique os_type settings, which triggers the creation of a new ephemeral disk backing file.","aliases":["CVE-2013-6437","GHSA-hrv9-4x4c-9jc8"],"modified":"2026-07-07T11:45:48.490317453Z","published":"2026-07-06T08:03:22.569278Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-6437"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/3e451f1bac57d24e47171cffb3ad59bb1610d836"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/6e455cd97f04bf26bbe022be17c57e089cf502f4"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/ca38774ebcf5b67d16c202c8f218c0c433973ca9"},{"type":"WEB","url":"https://bugs.launchpad.net/nova/+bug/1253980"},{"type":"PACKAGE","url":"https://github.com/openstack/nova"},{"type":"WEB","url":"http://lists.openstack.org/pipermail/openstack-announce/2013-December/000179.html"},{"type":"WEB","url":"http://rhn.redhat.com/errata/RHSA-2014-0231.html"},{"type":"PACKAGE","url":"https://pypi.org/project/nova"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-hrv9-4x4c-9jc8"}],"affected":[{"package":{"name":"nova","ecosystem":"PyPI","purl":"pkg:pypi/nova"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.0.0a0"}]}],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/nova/PYSEC-2026-874.yaml"}}],"schema_version":"1.7.5"}