The llhttp parser <v14.20.1, <v16.17.1 and <v18.9.1 in the http module in Node.js does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS).
https://hackerone.com/reports/1524692
https://nodejs.org/en/blog/vulnerability/july-2022-security-releases/