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      <title>CVE-2026-63308 — Helm Files.Lines Denial of Service via Empty Chart Files</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-63308</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; helm&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; helm&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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