{"id":"GHSA-cgm6-wvp9-4g5h","summary":"KubeVirt virt-api port-forward handler vulnerable to SSRF via guest-controlled VMI IP address","details":"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.","aliases":["CVE-2026-13318"],"modified":"2026-11-04T17:30:04.834983641Z","published":"2026-06-26T00:32:07Z","database_specific":{"github_reviewed_at":"2026-11-04T17:19:24Z","nvd_published_at":"2026-06-26T00:16:51Z","cwe_ids":["CWE-918"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13318"},{"type":"WEB","url":"https://github.com/kubevirt/kubevirt/pull/18753"},{"type":"WEB","url":"https://github.com/kubevirt/kubevirt/commit/0f5fef3309417f454565412f56f571f48358853f"},{"type":"WEB","url":"https://github.com/kubevirt/kubevirt/commit/df419a0f20aa7ddc9f4512431c3aed9a642ad1e1"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-13318"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492659"},{"type":"PACKAGE","url":"https://github.com/kubevirt/kubevirt"},{"type":"WEB","url":"https://github.com/kubevirt/kubevirt/releases/tag/v1.10.0-rc.0"}],"affected":[{"package":{"name":"kubevirt.io/kubevirt","ecosystem":"Go","purl":"pkg:golang/kubevirt.io/kubevirt"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.10.0-rc.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-cgm6-wvp9-4g5h/GHSA-cgm6-wvp9-4g5h.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"}]}