An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method
{ "versions": [ { "introduced": "0" }, { "fixed": "1.19.4" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43306.json"