CVE-2026-35204 HIGH

CVE-2026-35204: Helm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory

Vendor Helm
Product helm
Weakness CWE-22 · Path traversal
Published April 9, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

8.4/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:H/SI:H/SA:H

What the vulnerability does

01Description

Helm is a package manager for Charts for Kubernetes. From 4.0.0 to 4.1.3, a specially crafted Helm plugin, when installed or updated, will cause Helm to write the contents of the plugin to an arbitrary filesystem location. To prevent this, validate that the plugin.yaml of the Helm plugin does not include a version: field containing POSIX dot-dot path separators ie. "/../". This vulnerability is fixed in 4.1.4.

Key dates

02Disclosure timeline

April 9, 2026 CVE published
June 30, 2026 Record updated