A ReDoS (regular expression denial of service) flaw was found in the tough-cookie module before 2.3.3 for Node.js. An attacker that is able to make an HTTP request using a specially crafted cookie may cause the application to consume an excessive amount of CPU.
https://snyk.io/vuln/npm:tough-cookie:20170905
https://nodesecurity.io/advisories/525
https://github.com/salesforce/tough-cookie/issues/92
https://access.redhat.com/errata/RHSA-2018:1264
https://access.redhat.com/errata/RHSA-2018:1263
https://access.redhat.com/errata/RHSA-2017:2913