CVE-2020-23622: Cling Project Cling

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

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

Affected products

• Cling Project Cling: from 2.0.0, up to and including 2.1.2

Published 2022-08-15. Last modified 2026-06-17.