CVE-2023-23936

PoC —

CVSS 3.1

5.4 medium

EPSS

1%p65

Published

Feb 16, 2023 (Feb 16, 2023)

Modified

Jun 17, 2026

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.

Vendors: nodejs
Products: node.js, undici
Weakness: CWE-93, CWE-74
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.1%)

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