Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Helm | Helm | >= 4.0.0, < 4.1.4 |
Related Weaknesses (CWE)
References
- https://github.com/helm/helm/commit/36c8539e99bc42d7aef9b87d136254662d04f027Patch
- https://github.com/helm/helm/releases/tag/v4.1.4ProductRelease Notes
- https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmgMitigationVendor Advisory
FAQ
What is CVE-2026-35204?
CVE-2026-35204 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 arbitrar...
How severe is CVE-2026-35204?
CVE-2026-35204 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35204?
Check the references section above for vendor advisories and patch information. Affected products include: Helm Helm.