GHSA-vmx8-mqv2-9gmg

Suggest an improvement
Source
https://github.com/advisories/GHSA-vmx8-mqv2-9gmg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-vmx8-mqv2-9gmg/GHSA-vmx8-mqv2-9gmg.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-vmx8-mqv2-9gmg
Aliases
Downstream
Related
Published
2026-04-10T15:32:56Z
Modified
2026-04-13T08:27:25.138555497Z
Severity
  • 8.4 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Helm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory
Details

Helm is a package manager for Charts for Kubernetes. In Helm versions >=4.0.0 and <=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.

Impact

A Helm user who installs or updates a plugin that is specially crafted can cause Helm to attempt to write the content of the affected plugin to an arbitrary location on the user's filesystem. Impacted users risk potentially overwriting user and system files which may further compromise the integrity of a system.

Patches

This issue has been patched in Helm v4.1.4

Installing/updating a plugin with a non-SemVer version (which excludes path traversal patterns) will result in an error.

Workarounds

Validate that the plugin.yaml of the Helm plugin does not include a version: field containing POSIX dot-dot path separators ie. "/../".

Database specific 
{
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-22"
    ],
    "severity": "HIGH",
    "nvd_published_at": "2026-04-09T16:16:27Z",
    "github_reviewed_at": "2026-04-10T15:32:56Z"
}
References

Affected packages

Go / helm.sh/helm/v4

Package

Name
helm.sh/helm/v4
View open source insights on deps.dev
Purl
pkg:golang/helm.sh/helm/v4

Affected ranges

Type
SEMVER
Events
Introduced
4.0.0
Fixed
4.1.4

Database specific

last_known_affected_version_range 
"<= 4.1.3"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-vmx8-mqv2-9gmg/GHSA-vmx8-mqv2-9gmg.json"