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CVE-2026-63308

Helm Files.Lines Denial of Service via Empty Chart Files PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
helm / helmaffected 0 through 4.2.3; unaffected ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017

CWE

CWE-129

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.