{"schema_version":"1.7.3","id":"GHSA-m4f3-qp2w-gwh6","published":"2026-02-18T18:30:40Z","modified":"2026-07-13T16:43:30.495970967Z","aliases":["CVE-2026-24708","PYSEC-2026-2685"],"summary":"OpenStack Nova calls qemu-img without format restrictions for resize ","details":"An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected.","affected":[{"package":{"name":"nova","ecosystem":"PyPI","purl":"pkg:pypi/nova"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"32.0.0.0rc1"},{"last_affected":"32.1.0"}]}],"versions":["32.0.0","32.0.0.0rc1","32.1.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-m4f3-qp2w-gwh6/GHSA-m4f3-qp2w-gwh6.json"}},{"package":{"name":"nova","ecosystem":"PyPI","purl":"pkg:pypi/nova"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"31.0.0.0rc1"},{"last_affected":"31.2.0"}]}],"versions":["31.0.0","31.0.0.0rc1","31.0.1","31.1.0","31.2.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-m4f3-qp2w-gwh6/GHSA-m4f3-qp2w-gwh6.json"}},{"package":{"name":"nova","ecosystem":"PyPI","purl":"pkg:pypi/nova"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"30.2.1"}]}],"versions":["15.1.5","16.1.6","16.1.7","16.1.8","17.0.10","17.0.11","17.0.12","17.0.13","17.0.7","17.0.8","17.0.9","18.0.2","18.0.3","18.1.0","18.2.0","18.2.1","18.2.2","18.2.3","18.3.0","19.0.0","19.0.0.0rc1","19.0.0.0rc2","19.0.1","19.0.2","19.0.3","19.1.0","19.2.0","19.3.0","19.3.1","19.3.2","20.0.0","20.0.0.0rc1","20.0.0.0rc2","20.0.1","20.1.0","20.1.1","20.2.0","20.3.0","20.4.0","20.4.1","20.5.0","20.6.0","20.6.1","21.0.0","21.0.0.0rc1","21.0.0.0rc2","21.1.0","21.1.1","21.1.2","21.2.0","21.2.1","21.2.2","21.2.3","21.2.4","22.0.0","22.0.0.0rc1","22.0.1","22.1.0","22.2.0","22.2.1","22.2.2","22.3.0","22.4.0","23.0.0","23.0.0.0rc1","23.0.0.0rc2","23.0.1","23.0.2","23.1.0","23.2.0","23.2.1","23.2.2","24.0.0","24.0.0.0rc1","24.0.0.0rc2","24.1.0","24.1.1","24.2.0","24.2.1","25.0.0","25.0.0.0rc1","25.0.1","25.1.0","25.1.1","25.2.0","25.2.1","25.3.0","26.0.0","26.0.0.0rc1","26.0.0.0rc2","26.1.0","26.1.1","26.2.0","26.2.1","26.2.2","26.3.0","27.0.0","27.0.0.0rc1","27.1.0","27.2.0","27.3.0","27.4.0","27.5.0","27.5.1","28.0.0","28.0.0.0rc1","28.0.1","28.1.0","28.2.0","28.3.0","28.3.1","29.0.0","29.0.0.0rc1","29.0.1","29.0.2","29.1.0","29.2.0","29.2.1","29.2.2","29.3.0","29.4.0","30.0.0","30.0.0.0rc1","30.1.0","30.2.0","30.2.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-m4f3-qp2w-gwh6/GHSA-m4f3-qp2w-gwh6.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24708"},{"type":"WEB","url":"https://github.com/openstack/nova/commit/3eba22ff09c81a61750fbb4882e5f1f01a20fdf5"},{"type":"WEB","url":"https://bugs.launchpad.net/nova/+bug/2137507"},{"type":"PACKAGE","url":"https://github.com/openstack/nova"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2026/02/msg00025.html"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2026/02/17/7"}],"database_specific":{"cwe_ids":["CWE-669"],"github_reviewed":true,"github_reviewed_at":"2026-02-19T20:27:55Z","nvd_published_at":"2026-02-18T18:24:33Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H"}]}