CVE-2026-13218
Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher
Vexday Risk Score
10Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 4.2EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
25 jun 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
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.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
Productos afectados
Red Hat · Red Hat OpenShift Virtualization 4¿Quieres saber si tu infraestructura está expuesta a esto?
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