{"id":"CVE-2026-24708","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-24708","summary":"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…","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.","published":"2026-02-18T18:24:33.087","modified":"2026-07-15T02:18:49.967","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://bugs.launchpad.net/nova/+bug/2137507"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2026/02/17/7"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2026/02/msg00025.html"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:7884"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-24708"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2430312"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T02:18:49.967"}}