Security advisory

{
  "id": "7994bf2f1014835581a5c040f6d6edad7b60c020f27a075f1d087f9040104de9",
  "url": "https://osv.dev/vulnerability/CVE-2020-23622",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-23622",
    "summary": "An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked CALLBACK parameter in the request header",
    "evidence": "osv:CVE-2020-23622",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-23622",
      "aliases": [
        "CVE-2020-23622",
        "GHSA-c438-6f6r-pg8w"
      ],
      "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/4thline/cling",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5fd60eb9e2e87f2ae6d1cf049145c4187040518c"
                },
                {
                  "last_affected": "c1a9b8bf37a36a45b9924902179f9b23950b7340"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cling_project:cling:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.1.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.1",
            "2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23622.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:19.010834684Z",
      "provider": "osv",
      "references": [
        "https://github.com/4thline/cling/issues/253",
        "https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-23622",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385022,
  "published_at": "2022-08-15T20:15:09.04+00:00"
}