CVE-2026-24708An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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.
- CVSS
- 8.2 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
- Weakness (CWE)
- CWE-669, CWE-73
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Sep 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- https://bugs.launchpad.net/nova/+bug/2137507
- https://www.openwall.com/lists/oss-security/2026/02/17/7
- https://lists.debian.org/debian-lts-announce/2026/02/msg00025.html
- https://access.redhat.com/errata/RHSA-2026:54757
- https://access.redhat.com/errata/RHSA-2026:66401
- https://access.redhat.com/errata/RHSA-2026:7884
- https://access.redhat.com/security/cve/CVE-2026-24708
- https://bugzilla.redhat.com/show_bug.cgi?id=2430312
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.