CVE-2026-13318MediumMicrosoft CVSS 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Microsoft security update for CVE-2026-13318 — azl3

Published
July 1, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-13318 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-13318. This page also shows what EchelonGraph holds for CVE-2026-13318, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products6

  • azl3 kubevirt 1.7.1-7 on Azure Linux 3.0
  • azl3 kubevirt 1.7.1-8 on Azure Linux 3.0
  • azl3 kubevirt 1.8.4-1 on Azure Linux 3.0
  • azl3 kubevirt 1.8.4-2 on Azure Linux 3.0
  • azl3 kubevirt 1.8.4-4 on Azure Linux 3.0
  • azl3 kubevirt-openvmm 1.9.0-1 on Azure Linux 3.0

✅ Updates Microsoft lists: 2 updates

2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
—Security Update—
—Security Update—

🧭 EchelonGraph on CVE-2026-13318

EchelonGraph score
6.4 MEDIUM
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

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.

Published by Red Hat, Inc., the CVE Numbering Authority that assigned CVE-2026-13318, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (2)