This affects the package connection-tester before 0.2.1. The injection point is located in line 15 in index.js. The following PoC demonstrates the vulnerability:
{ "versions": [ { "introduced": "0" }, { "fixed": "0.2.1" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7781.json"