CVE-2022-35948

MEDIUM

undici <5.8.0 - CRLF Injection

Title source: llm

Description

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/json\r\n\r\nGET /foo2 HTTP/1.1' await request('http://localhost:3000, { method: 'GET', headers: { 'content-type': unsanitizedContentTypeInput }, }) ``` The above snippet will perform two requests in a single `request` API call: 1) `http://localhost:3000/` 2) `http://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.

Scores

CVSS v3 5.3
EPSS 0.0018
EPSS Percentile 39.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Classification

CWE
CWE-93 CWE-74
Status published

Affected Products (2)

nodejs/undici < 5.8.2
npm/undici < 5.8.2npm

Timeline

Published Aug 15, 2022
Tracked Since Feb 18, 2026