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CVE Vulnerability Details :
CVE-2026-35205
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-09 Apr, 2026 | 15:06
Updated At-30 Jun, 2026 | 12:09
Rejected At-
▼CVE Numbering Authority (CNA)
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 Products
Vendor
helm
Product
helm
Versions
Affected
  • >= 4.0.0, < 4.1.4
Problem Types
TypeCWE IDDescription
CWECWE-636CWE-636: Not Failing Securely ('Failing Open')
Type: CWE
CWE ID: CWE-636
Description: CWE-636: Not Failing Securely ('Failing Open')
Metrics
VersionBase scoreBase severityVector
4.08.4HIGH
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
Version: 4.0
Base score: 8.4
Base severity: 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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/helm/helm/security/advisories/GHSA-q5jf-9vfq-h4h7
x_refsource_CONFIRM
https://github.com/helm/helm/commit/05fa37973dc9e42b76e1d2883494c87174b6074f
x_refsource_MISC
https://github.com/helm/helm/releases/tag/v4.1.4
x_refsource_MISC
https://helm.sh/docs/topics/provenance/#the-provenance-file
x_refsource_MISC
Hyperlink: https://github.com/helm/helm/security/advisories/GHSA-q5jf-9vfq-h4h7
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/helm/helm/commit/05fa37973dc9e42b76e1d2883494c87174b6074f
Resource:
x_refsource_MISC
Hyperlink: https://github.com/helm/helm/releases/tag/v4.1.4
Resource:
x_refsource_MISC
Hyperlink: https://helm.sh/docs/topics/provenance/#the-provenance-file
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. github.com/helm/helm: helm.sh/helm/v4: Helm: Arbitrary code execution due to insufficient plugin provenance verification

A flaw was found in Helm, a package manager for Kubernetes. A remote attacker could exploit this vulnerability by providing a malicious plugin that lacks a provenance file. Even when signature verification is enabled, Helm would incorrectly install this unverified plugin, bypassing critical security checks. This could lead to arbitrary code execution within the Kubernetes environment, allowing an attacker to gain unauthorized control.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Helm CLI 4.1
CPEs
  • cpe:/a:redhat:helm_cli:4.1::el9
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-347Improper Verification of Cryptographic Signature
Type: CWE
CWE ID: CWE-347
Description: Improper Verification of Cryptographic Signature
Metrics
VersionBase scoreBase severityVector
3.18.0HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 8.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Metrics Other Info
Red Hat severity rating
value:
Important
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

RHSA-2026:26441: Helm CLI 4.1

Configurations
Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-04-09 16:01:08
Made public.2026-04-09 15:06:41
Event: Reported to Red Hat.
Date: 2026-04-09 16:01:08
Event: Made public.
Date: 2026-04-09 15:06:41
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-35205
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2456927
issue-tracking
x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35205.json
x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:26441
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-35205
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2456927
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35205.json
Resource:
x_sadp-csaf-vex
Hyperlink: https://access.redhat.com/errata/RHSA-2026:26441
Resource:
vendor-advisory
x_refsource_REDHAT
Details not found