{"id":"PYSEC-2026-860","summary":"OpenStack Compute (Nova) Denial of service due to improper validation of virtual size of QCOW2 image","details":"OpenStack Compute (Nova) Folsom, Grizzly, and Havana, when use_cow_images is set to False, 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 transferring an image with a large virtual size that does not contain a large amount of data from Glance.  NOTE: this issue is due to an incomplete fix for CVE-2013-2096.","aliases":["CVE-2013-4469","GHSA-2w87-5qcj-j6gx"],"modified":"2026-07-07T11:45:19.119475438Z","published":"2026-07-06T08:03:25.880153Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4469"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/135faa7b5d9855312bedc19e5e1ecebae34d3d18"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/3cdfe894ab58f7b91bf7fb690fc5bc724e44066f"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/f6810be4ae1a6c93e7d8017ee67d5344dfdf4a30"},{"type":"WEB","url":"https://bugs.launchpad.net/nova/+bug/1206081"},{"type":"PACKAGE","url":"https://github.com/openstack/nova"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2013/10/31/3"},{"type":"WEB","url":"http://www.ubuntu.com/usn/USN-2247-1"},{"type":"PACKAGE","url":"https://pypi.org/project/nova"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-2w87-5qcj-j6gx"}],"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-2026-860.yaml"}}],"schema_version":"1.7.5"}