Security advisory

{
  "id": "ec6a49ca668da3360be4eacccfb97c2fb36a906750b170900e199496d5cb8d20",
  "url": "https://osv.dev/vulnerability/CVE-2021-45099",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-45099",
    "summary": "The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH & Web Terminal) before 10.0.0 has an attack surface that requires social engineering. NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations",
    "evidence": "osv:CVE-2021-45099",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-45099",
      "aliases": [
        "CVE-2021-45099"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hassio-addons/app-ssh",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d9a9cbb4ac90e065543bc96ec2516666ff73f1ce"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ssh_\\&_web_terminal_project:ssh_\\&_web_terminal:*:*:*:*:*:home_assistant:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "10.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d9a9cbb4ac90e065543bc96ec2516666ff73f1ce"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v10.0.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v9.1.1",
            "v9.1.0",
            "v9.0.1",
            "v9.0.0",
            "v8.2.4",
            "v8.2.3",
            "v8.2.2",
            "v8.2.1",
            "v8.2.0",
            "v8.1.1",
            "v8.1.0",
            "v8.0.4",
            "v8.0.3",
            "v8.0.2",
            "v8.0.1",
            "v8.0.0",
            "v7.8.0",
            "v7.7.0",
            "v7.6.0",
            "v7.5.2",
            "v7.5.1",
            "v7.5.0",
            "v7.4.1",
            "v7.4.0",
            "v7.3.2",
            "v7.3.1-beta.2",
            "v7.3.1",
            "v7.3.1-beta.1",
            "v7.3.0",
            "v7.2.0",
            "v7.1.0",
            "v7.0.1",
            "v7.0.0",
            "v6.4.3",
            "v6.4.2",
            "v6.4.1",
            "v6.4.0",
            "v6.3.3",
            "v6.3.2",
            "v6.3.1",
            "v6.3.0",
            "v6.2.1",
            "v6.2.0",
            "v6.1.0",
            "v6.0.0",
            "v5.0.2",
            "v5.0.1",
            "v5.0.0",
            "v4.1.0",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v3.7.3",
            "v3.7.2",
            "v3.7.1",
            "v3.7.0",
            "v3.6.0",
            "v3.5.1",
            "v3.5.0",
            "v3.4.1",
            "v3.4.0",
            "v3.3.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.1",
            "v3.0.0",
            "v2.5.0",
            "v2.4.1",
            "v2.4.0",
            "v2.3.0",
            "v2.2.1",
            "v2.2.0",
            "v2.1.0",
            "v2.0.4",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45099.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:11.493047146Z",
      "provider": "osv",
      "references": [
        "https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0",
        "https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-45099",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384934,
  "published_at": "2021-12-16T05:15:08.777+00:00"
}