CVE-2026-35205: Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install
Helm is a package manager for Charts for Kubernetes. From 4.0.0 to 4.1.3, Helm will install plugins missing provenance (.prov file) when signature verification is required. This vulnerability is fixed in 4.1.4.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-35205?
CVE-2026-35205 has a moderate severity as it allows for the installation of unsigned plugins when provenance information is missing.
How do I fix CVE-2026-35205?
To fix CVE-2026-35205, upgrade to Helm version 4.1.4 or later.
What versions of Helm are affected by CVE-2026-35205?
Helm versions from 4.0.0 to 4.1.3 are affected by CVE-2026-35205.
What is the nature of the issue in CVE-2026-35205?
CVE-2026-35205 is a vulnerability that allows unsigned plugin installation due to the failure of plugin verification when a .prov file is absent.
Is Helm's plugin verification effective in versions before 4.1.4?
No, Helm's plugin verification is ineffective in versions before 4.1.4 because it fails to prevent unsigned plugins from being installed.