undici is an HTTP/1.1 client, written from scratch for Node.js.`=< [email protected]` users are vulnerable to _CRLF Injection_ on headers when using unsanitized input as request headers, more specifically, inside the `content-type` header. Example: “` import { request } from ‘undici’ const unsanitizedContentTypeInput = ‘application/jsonrnrnGET /foo2 HTTP/1.1’ await request(‘https://localhost:3000, { method: ‘GET’, headers: { ‘content-type’: unsanitizedContentTypeInput }, }) “` The above snippet will perform two requests in a single `request` API call: 1) `https://localhost:3000/` 2) `https://localhost:3000/foo2` This issue was patched in Undici v5.8.1. Sanitize input when sending content-type headers using user input as a workaround.
#### Mitigation

A possible mitigation is to sanitize user input when sending content-type headers.Read More