CVE-2026-35204
Helm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory
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.
INFO
Published Date :
April 9, 2026, 4:16 p.m.
Last Modified :
June 30, 2026, 3:19 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Helm to version 4.1.4 or later.
- Validate plugin.yaml for version field with path separators.
- Avoid installing untrusted Helm plugins.
Public PoC/Exploit Available at Github
CVE-2026-35204 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-35204.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35204 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-35204
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Security scanner for Helm chart supply chain integrity. Detects dependency pinning issues, template injection, values trust violations, and OLM subscription security.
Python CSS JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-35204 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-35204 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:helm_cli:4.1::el9'], 'vendor': 'Red Hat', 'product': 'Helm CLI 4.1', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-22 Added Reference https://access.redhat.com/errata/RHSA-2026:26441 Added Reference https://access.redhat.com/security/cve/CVE-2026-35204 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2456933 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35204.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'helm', 'product': 'helm', 'versions': [{'status': 'affected', 'version': '>= 4.0.0, < 4.1.4'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-35204', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-09T17:46:08.508995Z'} -
Initial Analysis by [email protected]
Apr. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.1.4 Added Reference Type GitHub, Inc.: https://github.com/helm/helm/commit/36c8539e99bc42d7aef9b87d136254662d04f027 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/helm/helm/releases/tag/v4.1.4 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmg Types: Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Apr. 09, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/helm/helm/commit/36c8539e99bc42d7aef9b87d136254662d04f027 Added Reference https://github.com/helm/helm/releases/tag/v4.1.4 Added Reference https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmg