---
id: CVE-2020-15187
aliases:
  - GHSA-c52f-pq47-2r9j
  - BIT-helm-2020-15187
title: plugin.yaml file allows for duplicate entries in helm
summary: plugin.yaml file allows for duplicate entries in helm
severity: low
cvss: 3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N'
vendor: helm
product: helm.sh/helm/v3
ecosystem: go
affected:
  - 'helm.sh/helm/v3 >= 3.0.0, < 3.3.2'
  - 'helm.sh/helm >= 2.0.0, < 2.16.11'
patched:
  - helm.sh/helm/v3 3.3.2
  - helm.sh/helm 2.16.11
published: '2021-05-24'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-c52f-pq47-2r9j'
references:
  - url: 'https://github.com/helm/helm/security/advisories/GHSA-c52f-pq47-2r9j'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-15187'
  - url: >-
      https://github.com/helm/helm/commit/6aab63765f99050b115f0aec3d6350c85e8da946
  - url: >-
      https://github.com/helm/helm/commit/ac7c07c37d87e09797f714fb57aa5e9cb99d9450
  - url: >-
      https://github.com/helm/helm/commit/b0296c0522e837d65f944beefa3fb64fd08ac304
  - url: >-
      https://github.com/helm/helm/commit/c8d6b01d72c9604e43ee70d0d78fadd54c2d8499
  - url: >-
      https://github.com/helm/helm/commit/d9ef5ce8bad512e325390c0011be1244b8380e4b
  - url: >-
      https://github.com/helm/helm/commit/f2ede29480b507b7d8bb152dd8b6b86248b00658
  - url: 'https://github.com/helm/helm'
tags:
  - osv
  - go
epss: 0.01517
epssPercentile: 0.73422
ingestedAt: '2026-07-09T18:56:36.315Z'
---

## Overview

### Impact

During a security audit of Helm's code base, Helm maintainers identified a bug in which a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack.

To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection).

### Patches

This issue has been patched in Helm 2.16.11 and Helm 3.3.2.

### Workarounds

Make sure to install plugins using a secure connection protocol like SSL.

## Affected packages

- `helm.sh/helm/v3 >= 3.0.0, < 3.3.2`
- `helm.sh/helm >= 2.0.0, < 2.16.11`

## Remediation

Upgrade to a patched release:

- `helm.sh/helm/v3 3.3.2`
- `helm.sh/helm 2.16.11`