What is CVE-2026-13218?

CVE-2026-13218 is a medium-severity vulnerability in Red Hat Openshift Virtualization 4, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 4.2/10. Published 2026-06-26.

How severe is CVE-2026-13218?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Red Hat Openshift Virtualization 4

CVE-2026-13218

A flaw was found in KubeVirt's virt-handler network cache handling. The WriteToCachedFile function writes data to a launcher-rooted path using os.WriteFile and os.Chown without symlink protection. A user with access to the virt-launcher co…

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L.

Affected products

Red Hat Openshift Virtualization 4

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

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

Frequently asked questions

What is CVE-2026-13218?: CVE-2026-13218 is a medium-severity vulnerability in Red Hat Openshift Virtualization 4, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 4.2/10. Published 2026-06-26.
How severe is CVE-2026-13218?: Medium severity. CVSS v3 base score is 4.2 out of 10.