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CVE-2026-13318

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

Published: Jun 25, 2026Updated: Jul 6, 2026 Sources: CVE List NVDCWE-918
6.4MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 95.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-918

Affected Products

Red Hat
commercial·USaka redhat
Red Hat OpenShift Virtualization 4SaaSSaaS Service
Cloud & SaaS / virtualization
openshift virtualizationOn-prem
Operating Systems / linux-distro
kubevirt
oss-projectaka containerized data importer, containerized-data-importer
kubevirtMixed
Cloud & SaaS / container-orchestration

Exploitability

Official Patch Available
Workaround Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-13318
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2492659
bugzilla.redhat.com

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