CVE-2026-13318

A server-side request forgery (SSRF) flaw was found in KubeVirt's virt-api port-forward handler. When processing a port-forward request to a VirtualMachineInstance (VMI), virt-api reads the target IP from vmi.Status.Interfaces[0].IP and passes it directly to net.Dial() without validation. For VMIs using non-masquerade network bindings (bridge or secondary-only), this IP is reported by the QEMU guest agent running inside the VM and is fully controllable by the VM owner. An attacker with kubevirt.io:edit permissions can create a VM with a modified guest agent that reports an arbitrary IP address, then request port-forward to establish a bidirectional TCP tunnel from virt-api's cluster-internal network position to any routable destination, bypassing NetworkPolicy isolation.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-13318	Mitigation Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2492659	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

06 Jul 2026, 17:45

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/security/cve/CVE-2026-13318 -~~	() https://access.redhat.com/security/cve/CVE-2026-13318 - Mitigation, Vendor Advisory
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2492659 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2492659 - Issue Tracking, Vendor Advisory
First Time		Redhat openshift Virtualization Kubevirt Redhat Kubevirt kubevirt
CPE		cpe:2.3:a:redhat:openshift_virtualization:::::::: cpe:2.3:a:kubevirt:kubevirt:-:::::kubernetes::

26 Jun 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-26 00:16

Updated : 2026-07-06 17:45

NVD link : CVE-2026-13318

Mitre link : CVE-2026-13318

CVE.ORG link : CVE-2026-13318

JSON object : View

Products Affected

kubevirt

kubevirt

redhat

openshift_virtualization

CWE

CWE-918

Server-Side Request Forgery (SSRF)

{"id": "CVE-2026-13318", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-13318", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T12:35:22.451050Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "secalert@redhat.com", "affectedData": [{"cpes": ["cpe:/a:redhat:container_native_virtualization:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Virtualization 4", "packageName": "container-native-virtualization/virt-api", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:container_native_virtualization:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Virtualization 4", "packageName": "container-native-virtualization/virt-api-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}]}], "published": "2026-06-26T00:16:51.277", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-13318", "tags": ["Mitigation", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492659", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "A server-side request forgery (SSRF) flaw was found in KubeVirt's virt-api port-forward handler. When processing a port-forward request to a VirtualMachineInstance (VMI), virt-api reads the target IP from vmi.Status.Interfaces[0].IP and passes it directly to net.Dial() without validation. For VMIs using non-masquerade network bindings (bridge or secondary-only), this IP is reported by the QEMU guest agent running inside the VM and is fully controllable by the VM owner. An attacker with kubevirt.io:edit permissions can create a VM with a modified guest agent that reports an arbitrary IP address, then request port-forward to establish a bidirectional TCP tunnel from virt-api's cluster-internal network position to any routable destination, bypassing NetworkPolicy isolation."}], "lastModified": "2026-07-06T17:45:33.717", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*", "vulnerable": true, "matchCriteriaId": "06AF9668-6158-47F4-A755-0EE4D5F7F413"}, {"criteria": "cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5301905C-9B5C-479F-A69A-659C6CB3AA42", "versionEndIncluding": "4.22.0", "versionStartIncluding": "4"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}