CRLF Injection in Nodejs ‘undici’ via host

보통 5.4CVE-2023-23936 · BIT-node-2023-23936 · BIT-node-min-2023-23936 · Published 16/02/2023 · updated 17/06/2026

요약

CVE-2023-23936은(는) node.js (nodejs), undici (nodejs), undici에 영향을 주는 보통 (CVSS 5.4) 취약점입니다.
향후 30일 내 악용 확률(EPSS): 1.1%, 전체 취약점의 66.4%보다 높음.
조치: 16.19.1, 18.14.1, 19.6.1, 5.19.1 이상으로 업데이트하세요.

Package	Affected versions	Patched versions
node.js nodejs	`≥ 16.0.0, < 16.19.1≥ 18.0.0, < 18.14.1≥ 19.0.0, < 19.6.1`	`16.19.118.14.119.6.1`
undici nodejs	`≥ 2.0.0, < 5.19.1`	`5.19.1`
undici npm	`≥ 2.0.0, < 5.19.1`	`5.19.1`

Description

Impact

undici library does not protect host HTTP header from CRLF injection vulnerabilities.

Patches

This issue was patched in Undici v5.19.1.

Workarounds

Sanitize the headers.host string before passing to undici.

References

Reported at https://hackerone.com/reports/1820955.

Credits

Thank you to Zhipeng Zhang (@timon8) for reporting this vulnerability.

NVD 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.