{"id":"CVE-2020-23622","aliases":["GHSA-c438-6f6r-pg8w"],"url":"https://o3.security/vulnerability/CVE-2020-23622","summary":"4thline cling uPnP protocol issue can lead to denial of service","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","published":"2022-08-15T20:15:09.040Z","modified":"2026-07-09T00:13:40.171179Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.fourthline.cling:cling-core","fixedVersion":null}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:13:40.171179Z"}}