What is CVE-2026-13434?

CVE-2026-13434 is a medium-severity vulnerability in Red Hat Openshift Virtualization 4, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2026-06-26.

How severe is CVE-2026-13434?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Improper input validation in Red Hat Openshift Virtualization 4

CVE-2026-13434

A flaw was found in KubeVirt's network annotation generator. When a tenant creates a VirtualMachineInstance with a Multus network configuration, the supplied networkName value is written verbatim into the launcher pod's v1.multus-cni.io/de…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Red Hat Openshift Virtualization 4

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-13434?: CVE-2026-13434 is a medium-severity vulnerability in Red Hat Openshift Virtualization 4, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2026-06-26.
How severe is CVE-2026-13434?: Medium severity. CVSS v3 base score is 4.9 out of 10.