PYSEC-2026-876
Vulnerability from pysec - Published: 2026-07-06 08:03 - Updated: 2026-07-06 08:03
VLAI
Details
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.
Severity
Impacted products
| Name | purl | nova | pkg:pypi/nova |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "nova",
"purl": "pkg:pypi/nova"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.0.0a0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2013-2096",
"GHSA-m674-hmx2-ffhq"
],
"details": "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.",
"id": "PYSEC-2026-876",
"modified": "2026-07-06T08:03:26.645846Z",
"published": "2026-07-06T08:03:26.645846Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-2096"
},
{
"type": "WEB",
"url": "https://github.com/openstack/nova/commit/0caeb8eaf20abcdc77828f5c6b79fc104619e231"
},
{
"type": "WEB",
"url": "https://github.com/openstack/nova/commit/44a8aba1d5da87d54db48079103fdef946666d80"
},
{
"type": "PACKAGE",
"url": "https://github.com/openstack/nova"
},
{
"type": "WEB",
"url": "https://review.openstack.org/#/c/28717"
},
{
"type": "WEB",
"url": "https://review.openstack.org/#/c/28901"
},
{
"type": "WEB",
"url": "https://review.openstack.org/#/c/29192"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20130726040108/http://www.securityfocus.com/bid/59924"
},
{
"type": "WEB",
"url": "http://lists.openstack.org/pipermail/openstack-announce/2013-May/000102.html"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1831-1"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/nova"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-m674-hmx2-ffhq"
}
],
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OpenStack Compute (Nova) does not verify the virtual size of a QCOW2 image"
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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