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Security advisory

Type: advisorySources: OSVCVE: CVE-2020-15186

In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to `helm --help`. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the `name` field in the `plugin.yaml` file for a plugin, looking for characters outside of the [a-zA-Z0-9._-] range.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-15186
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 10:52 UTC · Revision 1

Source evidence

CVE-2020-15186

core-osv · Original source

Published 17 Sept 2020, 22:15 UTC

In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to `helm --help`. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the `name` field in the `plugin.yaml` file for a plugin, looking for characters outside of the [a-zA-Z0-9._-] range.

osv:CVE-2020-15186
Complete source record
{
  "id": "58061b15a6a63c5bf7eca4613f042f4ae18692f7d22c14dea6eb8945dd49aa88",
  "url": "https://osv.dev/vulnerability/CVE-2020-15186",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-15186",
    "summary": "In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to `helm --help`. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the `name` field in the `plugin.yaml` file for a plugin, looking for characters outside of the [a-zA-Z0-9._-] range.",
    "evidence": "osv:CVE-2020-15186",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2020-15186",
      "aliases": [
        "BIT-helm-2020-15186",
        "CVE-2020-15186",
        "GHSA-m54r-vrmv-hw33"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/helm/helm",
              "type": "GIT",
              "events": [
                {
                  "introduced": "51bdad42756dfaf3234f53ef3d3cb6bcd94144c2"
                },
                {
                  "fixed": "73b28bab84490d18ab1b71489a574ee18e229eea"
                },
                {
                  "introduced": "e29ce2a54e96cd02ccfce88bee4f58bb6e2a28b6"
                },
                {
                  "fixed": "e5077257b6ca106d1f65652b4ca994736d221ab1"
                },
                {
                  "fixed": "809e2d999e2c33e20e77f6bff30652d79c287542"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.16.11"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "809e2d999e2c33e20e77f6bff30652d79c287542"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.16.10",
            "v3.3.1",
            "v3.3.0-rc.2",
            "v3.3.0",
            "v2.16.9",
            "v3.3.0-rc.1",
            "v2.16.8",
            "v2.16.7",
            "v3.0.0-beta.5",
            "v3.0.0-beta.4",
            "v3.0.0-beta.3",
            "v3.0.0-beta.2",
            "v3.0.0-beta.1",
            "v3.0.0-alpha.2",
            "v3.0.0-alpha.1",
            "v2.10.0-rc.2",
            "v2.10.0-rc.1",
            "v2.8.0-rc.1",
            "v2.7.0",
            "v2.7.0-rc1",
            "v2.6.0",
            "v2.5.0",
            "v2.4.0",
            "v2.3.0",
            "v2.2.0",
            "v2.1.0",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15186.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:52.658976539Z",
      "provider": "osv",
      "references": [
        "https://github.com/helm/helm/security/advisories/GHSA-m54r-vrmv-hw33",
        "https://github.com/helm/helm/commit/809e2d999e2c33e20e77f6bff30652d79c287542"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-15186",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383069,
  "published_at": "2020-09-17T22:15:12.52+00:00"
}