CVE-2026-24708

highpriority · track · 0EPSS 0.004 · 36 %ileDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.42% (36th) EPSS
CVSS 8.2 · high
Is it mine?
9 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.2
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · ENISA EU
v3.18.2highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · cve@mitre.org USexploitability 1.8 · impact 5.8
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondaryexploitability 1.8 · impact 5.2
v3.18.2highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · OSV
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-669USCWE-669USCWE-73US
04

affected products (9)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-1301Red Hat OpenStack Services auf OpenShift (Nova): Schwachstelle ermöglicht Manipulation von DateienDeutsch2026-04-28csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in Red Hat OpenStack Services auf OpenShift ausnutzen, um Dateien zu manipulieren.

  • GHSA-m4f3-qp2w-gwh6OpenStack Nova calls qemu-img without format restrictions for resize 2026-02-18ghsa · osvUS

    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.

  • PYSEC-2026-2685OpenStack Nova calls qemu-img without format restrictions for resize 2026-07-13vendor · osvUS

    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.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvcert_bundNVDCVE.orgMITRE
published 2026-02-18modified 2026-09-11
08

references (15)

External citations — patches, advisories, analysis.

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