{"affected":[{"package":{"ecosystem":"Bitnami","name":"helm","purl":"pkg:bitnami/helm"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"4.2.4"}],"type":"SEMVER"}],"severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","type":"CVSS_V4"}]}],"aliases":["CVE-2026-63308"],"database_specific":{"cpes":["cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*"],"severity":"Medium"},"details":"Helm through 4.2.3, fixed in commit ba6c9a2, contains a denial of service vulnerability in the Files.Lines template helper in pkg/engine/files.go that allows attackers to trigger an index out of range panic by including zero-length byte slices in chart files. Attackers can include empty files in Helm charts to cause deterministic render failures across template, install, upgrade, lint, and SDK Engine.Render operations.","id":"BIT-helm-2026-63308","modified":"2026-10-30T09:15:51.334Z","published":"2026-07-31T08:42:54.137Z","references":[{"type":"FIX","url":"https://github.com/helm/helm/commit/ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017"},{"type":"EVIDENCE","url":"https://github.com/helm/helm/issues/32279"},{"type":"FIX","url":"https://github.com/helm/helm/pull/32290"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63308"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/chat2db-insecure-direct-object-reference-via-get-api-connection-datasource"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/helm-files-lines-denial-of-service-via-empty-chart-files"}],"schema_version":"1.6.2","summary":"Helm Files.Lines Denial of Service via Empty Chart Files"}