VULNERABILITY INTELLIGENCE

CVE-2026-63308

CVSS score4.3 MEDIUM
EPSS probability0.49%
CISA KEVNot currently listed
Published2026-07-17
Last modified2026-10-29
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-129

Primary references