6.4

CVE-2026-13318

Virt-api-rhel9: kubevirt: kubevirt: ssrf in virt-api port-forward via unvalidated guest-agent-reported ip

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Kubevirt ≫ Kubevirt Version- SwPlatformkubernetes
Redhat ≫ Openshift Virtualization Version >= 4 <= 4.22.0
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.045
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 6.4 3.1 2.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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