CVE-2026-13218

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

4.2 / 10

Vector String

                                        CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L                                    

Vulnerability Description

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 container can plant a symlink at the cache file path, causing virt-handler to follow it and overwrite an arbitrary host file with JSON content and change its ownership.

Vulnerability Details

Published Date

June 26, 2026

Last Modified

June 26, 2026

CWE ID

CWE-61

Source

NVD

Vendor

Red Hat

Product

Red Hat OpenShift Virtualization 4

External References

https://access.redhat.com/security/cve/CVE-2026-13218
https://bugzilla.redhat.com/show_bug.cgi?id=2492654

CVE-2026-13218

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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