---
id: CVE-2013-2096
aliases:
  - GHSA-m674-hmx2-ffhq
  - PYSEC-2026-876
title: OpenStack Compute (Nova) does not verify the virtual size of a QCOW2 image
summary: OpenStack Compute (Nova) does not verify the virtual size of a QCOW2 image
severity: medium
vendor: nova
product: nova
ecosystem: pip
affected:
  - nova < 12.0.0a0
patched:
  - nova 12.0.0a0
published: '2022-05-17'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-m674-hmx2-ffhq'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2013-2096'
  - url: >-
      https://github.com/openstack/nova/commit/0caeb8eaf20abcdc77828f5c6b79fc104619e231
  - url: >-
      https://github.com/openstack/nova/commit/44a8aba1d5da87d54db48079103fdef946666d80
  - url: 'https://github.com/openstack/nova'
  - url: 'https://review.openstack.org/#/c/28717'
  - url: 'https://review.openstack.org/#/c/28901'
  - url: 'https://review.openstack.org/#/c/29192'
  - url: >-
      https://web.archive.org/web/20130726040108/http://www.securityfocus.com/bid/59924
  - url: >-
      http://lists.openstack.org/pipermail/openstack-announce/2013-May/000102.html
  - url: 'http://www.ubuntu.com/usn/USN-1831-1'
tags:
  - osv
  - pip
epss: 0.00386
epssPercentile: 0.3256
ingestedAt: '2026-07-08T18:25:51.142Z'
---

## Overview

OpenStack Compute (Nova) Folsom, Grizzly, and Havana 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 creating an image with a large virtual size that does not contain a large amount of data.

## Affected packages

- `nova < 12.0.0a0`

## Remediation

Upgrade to a patched release:

- `nova 12.0.0a0`