Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2023-23936 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/nodejs/undici/commit/a2eff05401358f6595138df963837c24348f2034	CVE	Patch
https://github.com/nodejs/undici/releases/tag/v5.19.1	CVE	Release Notes
https://github.com/nodejs/undici/security/advisories/GHSA-5r9g-qh6m-jxff	CVE	Vendor Advisory
https://hackerone.com/reports/1820955	CVE	ExploitThird Party Advisory
https://github.com/nodejs/undici/commit/a2eff05401358f6595138df963837c24348f2034	[email protected]	Patch
https://github.com/nodejs/undici/releases/tag/v5.19.1	[email protected]	Release Notes
https://github.com/nodejs/undici/security/advisories/GHSA-5r9g-qh6m-jxff	[email protected]	Vendor Advisory
https://hackerone.com/reports/1820955	[email protected]	ExploitThird Party Advisory

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-74	Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')	[email protected]
CWE-93	Improper Neutralization of CRLF Sequences ('CRLF Injection')	[email protected]

Affected Products

Product	Versions
nodejs node.js	>= 16.0.0, < 16.19.1 >= 18.0.0, < 18.14.1 >= 19.0.0, < 19.6.1
CPE cpe:2.3:a:nodejs:node.js:::::lts:::* cpe:2.3:a:nodejs:node.js:::::-:::* Remediation No remediation found in references.
nodejs undici	>= 2.0.0, < 5.19.1
CPE cpe:2.3:a:nodejs:undici::::::node.js::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 24, 2023	Initial Analysis	[email protected]