CVE-2023-23936

CRLF Injection in Nodejs ‘undici’ via host

State: Published
Severity: 6.5 Medium
Published: Feb 16, 2023
Updated: Mar 10, 2025
Reserved: Jan 19, 2023

Description

Undici is an HTTP/1.1 client for Node.js. Starting with version 2.0.0 and prior to version 5.19.1, the undici library does not protect `host` HTTP header from CRLF injection vulnerabilities. This issue is patched in Undici v5.19.1. As a workaround, sanitize the `headers.host` string before passing to undici.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

Affected Products

Product	Versions
undicinodejs	>=2.0.0, < 5.19.1Affected

References

https://github.com/nodejs/undici/security/advisories/GHSA-5r9g-qh6m-jxff
https://github.com/nodejs/undici/commit/a2eff05401358f6595138df963837c24348f2034
https://hackerone.com/reports/1820955
https://github.com/nodejs/undici/releases/tag/v5.19.1

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