CVE-2026-13322Published

Kubevirt: virt-handler-rhel9: kubevirt: unbounded virtio-serial readline in virt-handler causes oom denial of service

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-13322

Published

A flaw was found in KubeVirt's downward metrics virtio-serial server. The server reads guest requests using textproto.Reader.ReadLine(), which buffers input indefinitely until a newline character is received, with no length limit or read deadline. A user with access to a VM guest that has the downward metrics virtio-serial device configured can write a continuous byte stream to the device, causing unbounded memory allocation in the virt-handler process until it is OOM-killed.

Source published: 26 Jun 2026 00:04:07 UTC
Source modified: 26 Jun 2026 13:39:15 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 3.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

euvd · EUVD-2026-39599

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jun 26, 2026, 12:04:07 AM

dateUpdated: Jun 26, 2026, 1:39:15 PM

1 related source bulletins · separate from aliases

msrc_CVE-2026-13322: Kubevirt: virt-handler-rhel9: kubevirt: unbounded virtio-serial readline in virt-handler causes oom denial of service

CVE-2026-13322

Source published: Jun 26, 2026, 12:04:07 AM (timezone not stated)
Source modified: Jun 26, 2026, 1:39:15 PM (timezone not stated)
Observed here: 6 Nov 2026 19:05:45 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 3.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

nvd · CVE-2026-13322

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-770

Original publisher date fields

published: 2026-06-26T00:16:51.397

lastModified: 2026-10-25T22:10:00.150

2 source CPE criteria · context only

cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*
cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 26 Jun 2026 00:16:51 UTC
Source modified: 25 Oct 2026 22:10:00 UTC
Observed here: 4 Nov 2026 18:05:55 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 3.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

osv · GHSA-6f2p-2qg2-qqch

Published

Source published: 26 Jun 2026 00:32:07 UTC
Source modified: 5 Nov 2026 23:26:13 UTC
Observed here: 5 Nov 2026 23:38:32 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Publisher rating · LOW

osv · GO-2026-6912

Published

KubeVirt downward metrics virtio-serial server vulnerable to unbounded memory consumption in kubevirt.io/kubevirt

Source published: 5 Nov 2026 22:55:09 UTC
Source modified: 5 Nov 2026 23:15:18 UTC
Observed here: 5 Nov 2026 23:38:32 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.