CVE-2026-35205CWE-636

Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install

High · published April 9, 2026

CVSS v4.0
8.4
EPSS
0%
Percentile
11.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.4 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00217 · 11.6th percentile
Weakness
CWE-636 · Not Failing Securely ('Failing Open')
Published
2026-04-09T15:06Z
EPSS history
Timeline
  • 09 APR 15:06Z
    Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install
    cvelistv5