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CVE-2026-13434

🗓️ 26 Jun 2026 16:00:43Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 57 Views🌐 WEB

CVE-2026-13434: KubeVirt Multus annotation injection enables cross-namespace network access.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-13434
26 Jun 202616:00
–attackerkb
cvelist
Cvelist
CVE-2026-13434 Virt-controller-rhel9: kubevirt: kubevirt: multus default-network annotation injection via unvalidated tenant networkname when externalnetresourceinjection is enabled
26 Jun 202616:00
–cvelist
euvd
EUVD
EUVD-2026-39796
26 Jun 202616:00
–euvd
mend
Mend
CVE-2026-13434
26 Jun 202616:00
–mend
nvd
NVD
CVE-2026-13434
26 Jun 202617:16
–nvd
osv_mini
osv_mini
MINI-FPM5-FHWG-8854
5 Aug 202614:03
–osv_mini
osv_mini
osv_mini
MINI-XFFH-2665-387G
5 Aug 202614:03
–osv_mini
ptsecurity
Positive Technologies
PT-2026-52848
26 Jun 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-13434: Improper Input Validation
26 Jun 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-13434
26 Jun 202616:00
–redhatcve
Rows per page
NVD
Node
OR
kubevirtkubevirtMatch-kubernetes
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Virtualization 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "container-native-virtualization/virt-controller-rhel9",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:container_native_virtualization:4"
    ]
  }
]
ParameterPositionPathDescriptionCWE
networkNameheader/v1.multus-cni.io/default-networkThe networkName value in the v1.multus-cni.io/default-network annotation is written verbatim without validation, allowing for JSON injection to specify arbitrary namespaces, NAD names, and IP/MAC addresses.CWE-20

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25 Oct 2026 17:10Current
6Medium risk
Vulners AI Score6
CVSS 3.14.9
EPSS0.00244
SSVC
57