CVEvulnerability

CVE-2026-13318

6.4 MEDIUM Published 2026-06-26 Modified 2026-10-25 Official page ↗
Status
Analyzed
Published
2026-06-26
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weaknesses
CWE-918

Description

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.

Affected configurations

• kubevirt kubevirt • redhat openshift virtualization (>= 4 <= 4.22.0)

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References