CVE-2026-13218

medium Red Hat
CVSS v3 Base Score
4.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Published: June 25, 2026 (14 days ago)
Last Modified: June 25, 2026
Vendor: Red Hat
Source: REDHAT

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.

CWE

CWE-61

Affected Products

Red Hat OpenShift Virtualization 4

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov