PT-2026-60806 · Helm · Helm

George Chen · CVE-2026-63308 · Published 2026-07-17 · Updated 2026-07-17

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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.

Exploit

Fix

Improper Validation of Array Index

Weakness Enumeration

CWE-129

Related Identifiers

CVE-2026-63308

Affected Products

Helm

References · 5

• 🔥 https://github.com/helm/helm/issues/32279 · Exploit
• https://github.com/helm/helm/commit/ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-63308 · Security Note
• https://github.com/helm/helm/pull/32290 · Note
• https://vulncheck.com/advisories/chat2db-insecure-direct-object-reference-via-get-api-connection-datasource · Note