{"id":"PYSEC-2026-876","summary":"OpenStack Compute (Nova) does not verify the virtual size of a QCOW2 image","details":"OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) by creating an image with a large virtual size that does not contain a large amount of data.","aliases":["CVE-2013-2096","GHSA-m674-hmx2-ffhq"],"modified":"2026-07-07T11:45:48.801721305Z","published":"2026-07-06T08:03:26.645846Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-2096"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/0caeb8eaf20abcdc77828f5c6b79fc104619e231"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/44a8aba1d5da87d54db48079103fdef946666d80"},{"type":"PACKAGE","url":"https://github.com/openstack/nova"},{"type":"WEB","url":"https://review.openstack.org/#/c/28717"},{"type":"WEB","url":"https://review.openstack.org/#/c/28901"},{"type":"WEB","url":"https://review.openstack.org/#/c/29192"},{"type":"WEB","url":"https://web.archive.org/web/20130726040108/http://www.securityfocus.com/bid/59924"},{"type":"WEB","url":"http://lists.openstack.org/pipermail/openstack-announce/2013-May/000102.html"},{"type":"WEB","url":"http://www.ubuntu.com/usn/USN-1831-1"},{"type":"PACKAGE","url":"https://pypi.org/project/nova"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-m674-hmx2-ffhq"}],"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-2026-876.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}