How severe is CVE-2026-13318?

CVE-2026-13318 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-13318 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-13318?

CVE-2026-13318 primarily affects Redhat Openshift Virtualization. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-13318?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-13318 have an EU (EUVD) identifier?

Yes. CVE-2026-13318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39595.

When was CVE-2026-13318 published?

CVE-2026-13318 was published on 2026-06-26 and last updated on 2026-07-06.

CVE-2026-13318

CVE-2026-13318 is a medium-severity vulnerability in Redhat Openshift Virtualization with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39595
Weakness: CWE-918
Affected product: Redhat Openshift Virtualization
Published: 2026-06-26
Last modified: 2026-07-06

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.

Frequently asked questions

What is CVE-2026-13318?: 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.
How severe is CVE-2026-13318?: CVE-2026-13318 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-13318 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-13318?: CVE-2026-13318 primarily affects Redhat Openshift Virtualization. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-13318?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-13318 have an EU (EUVD) identifier?: Yes. CVE-2026-13318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39595.
When was CVE-2026-13318 published?: CVE-2026-13318 was published on 2026-06-26 and last updated on 2026-07-06.

References

Affected products (2)

cpe:2.3:a:kubevirt:kubevirt:-:*:*:*:*:kubernetes:*:*
cpe:2.3:a:redhat:openshift_virtualization:*:*:*:*:*:*:*:*

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