{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "2.0.0"
              },
              {
                "last_affected": "2.1.2"
              }
            ]
          },
          "events": [
            {
              "introduced": "5fd60eb9e2e87f2ae6d1cf049145c4187040518c"
            },
            {
              "last_affected": "c1a9b8bf37a36a45b9924902179f9b23950b7340"
            }
          ],
          "repo": "https://github.com/4thline/cling",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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",
  "id": "CVE-2020-23622",
  "modified": "2026-03-13T21:54:02.841485070Z",
  "published": "2022-08-15T20:15:09.040Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/4thline/cling/issues/253"
    },
    {
      "type": "ARTICLE",
      "url": "https://zh-cn.tenable.com/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=true"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}