Security advisory

{
  "id": "86ab380777127f0abf5e806f9a944d906d61304d921a774191c2f4feb83ed0e5",
  "url": "https://osv.dev/vulnerability/CVE-2021-31606",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-31606",
    "summary": "furlongm openvpn-monitor through 1.1.3 allows Authorization Bypass to disconnect arbitrary clients.",
    "evidence": "osv:CVE-2021-31606",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-31606",
      "aliases": [
        "CVE-2021-31606",
        "GHSA-5w5c-3g26-8mmc",
        "PYSEC-2021-354"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/furlongm/openvpn-monitor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "304203f36a7d7ce9ddb85d22a5134a747da0a5f3"
                },
                {
                  "fixed": "ddb9d31ef0ec56f578bdacf99ebe9d68455ed8ca"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openvpn-monitor_project:openvpn-monitor:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ddb9d31ef0ec56f578bdacf99ebe9d68455ed8ca"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31606.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:40.698732808Z",
      "provider": "osv",
      "references": [
        "https://github.com/furlongm/openvpn-monitor/releases",
        "https://github.com/furlongm/openvpn-monitor/commit/ddb9d31ef0ec56f578bdacf99ebe9d68455ed8ca"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-31606",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385871,
  "published_at": "2021-09-27T06:15:07.863+00:00"
}