CVE-2026-63308
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Jul 17, 2026
Vendor
unknown
Description
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.