CVE-2023-23936 | BDVDB-2026-195754 Detail

nodejsundici

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

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

References#

Exploit#

No public exploit known

History#

Version 12023-02-16Record published in the CVE List.
Version 22025-03-10Most recent update recorded in the CVE List.

Published

Published: 2023-02-16
Last modified: 2025-03-10

Vendor information

Vendor: nodejs
Product: undici

All nodejs vulnerabilities

Score

6.5 Medium

EPSS

1.1%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 66.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>=2.0.0, < 5.19.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.5 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).