CVE-2026-63308
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.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-07-17
- Last modified
- 2026-07-17
- Weaknesses
- CWE-129
Affected products
References
- https://github.com/helm/helm/commit/ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017
- https://github.com/helm/helm/issues/32279
- https://github.com/helm/helm/pull/32290
- https://www.vulncheck.com/advisories/chat2db-insecure-direct-object-reference-via-get-api-connection-datasource
