CVE-2026-35204

Helm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory

HIGH
8.6
CVSS Score
Published: April 9, 2026 at 03:03 PM UTC
Updated: July 15, 2026 at 02:20 AM UTC
1 product affected across 1 vendorHelm

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Severity
HIGH8.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.1.44.0.0 ≤ v < 4.1.4
Affected range stops below 4.1.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmg
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/helm/helm/releases/tag/v4.1.4
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:26441
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-35204
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2456933

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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