CVE-2026-13218 - Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

CVE-2026-13218 - Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

https://cvefeed.io/rssfeed/latest.atom / Fri, 06/26/2026 - 04:02
CVE ID :CVE-2026-13218
Published : June 25, 2026, 11:23 p.m. | 1 hour, 18 minutes ago
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.
Severity: 4.2 | MEDIUM
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.