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TI-2026-11284 Aliases CVE-2026-13318GHSA-cgm6-wvp9-4g5h

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

Priority LOW 28CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00236 14th percentileScored 2026-11-07
Fix Partial kubevirt.io/kubevirt (Go): 1.10.0-rc.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat OpenShift Virtualization 4——No fix listedCNA
Red HatRed Hat OpenShift Virtualization 4——No fix listedCNA
—kubevirt.io/kubevirt (Go)before 1.10.0-rc.01.10.0-rc.0Patch availableGHSA-cgm6-wvp9-4g5h
  • Red Hat OpenShift Virtualization 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift Virtualization 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • kubevirt.io/kubevirt (Go) Vendor— Affected before 1.10.0-rc.0 Fixed in 1.10.0-rc.0 Patch available GHSA-cgm6-wvp9-4g5h

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*not specified by NVDVulnerablekubevirt
cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*4 – 4.22.0VulnerableRed Hat
  • cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:* Versions not specified by NVD Vulnerable ·kubevirt
  • cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:* Versions 4 – 4.22.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-cgm6-wvp9-4g5h kubevirt.io/kubevirt (Go) Fixed in 1.10.0-rc.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Virtualization 4AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13318
  2. 2026-10-03 Alias added: GHSA-cgm6-wvp9-4g5h
  3. 2026-11-04 Fix available: Go/kubevirt.io/[email protected] · GHSA-cgm6-wvp9-4g5h
  4. 2026-11-04 CVSS score added · GHSA-cgm6-wvp9-4g5h
  5. 2026-11-04 Weakness changed · GHSA-cgm6-wvp9-4g5h
  6. 2026-11-04 8 new references · GHSA-cgm6-wvp9-4g5h

References

Advisory 3

Other 5

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
  • TI-2026-32429 Axios: Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge CVSS 3.1HIGH 7.7
  • TI-2026-23208 Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable CVSS 4.0HIGH 8.7
  • TI-2020-11187 Improper privilege management in kubevirt CVSS 3.1CRITICAL 9.9
  • TI-2026-11209 Kubevirt: virt-handler-rhel9: kubevirt: safepath symlink following in virt-handler… CVSS 3.1HIGH 7.3
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences