{"id":"AZL-111647","summary":"CVE-2026-13218 affecting package kubevirt-openvmm 1.9.0-1","details":"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.","modified":"2026-11-01T14:17:35.784678468Z","published":"2026-06-26T00:16:51Z","upstream":["CVE-2026-13218"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13218"}],"affected":[{"package":{"name":"kubevirt-openvmm","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kubevirt-openvmm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.9.0-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111647.json"}}],"schema_version":"1.9.2"}