CVE-2023-23936

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.

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.

### 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](https://hackerone.com/timon8)) for reporting this vulnerability.

### 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](https://hackerone.com/timon8)) for reporting this vulnerability.