CVE-2023-23936

MEDIUM

6.5

CVSS v3

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.

CWE-93 CWE-74Injection

How to fix

Remediation Available

node-undiciDebian

Fixed in:5.15.0+dfsg1+~cs20.10.9.3-1+deb12u1CVE-2023-23936

Fixed in:5.19.1+dfsg1+~cs20.10.9.5-1CVE-2023-23936

nodejsRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.src::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejsRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.src::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-debuginfoRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-debuginfoRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-debugsourceRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-debugsourceRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-develRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

nodejs-develRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

nodejs-docsRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.noarch::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-docsRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.noarch::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-full-i18nRed Hat / RHEL

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-full-i18nRocky

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:18.14.2-2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-libsRocky

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-libsRed Hat / RHEL

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-libs-debuginfoRed Hat / RHEL

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

nodejs-libs-debuginfoRocky

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

Fixed in:1:16.20.2-1.el9_0RHSA-2023:5533

Fixed in:1:16.19.1-1.el9_2RHSA-2023:2655

nodejs-nodemonRocky

Fixed in:0:2.0.20-2.module+el9.2.0.z+18497+a402347c.noarch::nodejs:18RHSA-2023:2654

Fixed in:0:2.0.20-2.module+el9.2.0.z+18497+a402347c.src::nodejs:18RHSA-2023:2654

Fixed in:0:2.0.20-3.el9_2RHSA-2023:2655

nodejs-nodemonRed Hat / RHEL

Fixed in:0:2.0.20-2.module+el9.2.0.z+18497+a402347c.src::nodejs:18RHSA-2023:2654

Fixed in:0:2.0.20-2.module+el9.2.0.z+18497+a402347c.noarch::nodejs:18RHSA-2023:2654

Fixed in:0:2.0.20-3.el9_2RHSA-2023:2655

nodejs-packagingRocky

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.noarch::nodejs:18RHSA-2023:2654

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.src::nodejs:18RHSA-2023:2654

nodejs-packagingRed Hat / RHEL

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.src::nodejs:18RHSA-2023:2654

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.noarch::nodejs:18RHSA-2023:2654

nodejs-packaging-bundlerRed Hat / RHEL

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.noarch::nodejs:18RHSA-2023:2654

nodejs-packaging-bundlerRocky

Fixed in:0:2021.06-4.module+el9.1.0+15718+e52ec601.noarch::nodejs:18RHSA-2023:2654

npmRocky

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:8.19.3-1.16.19.1.1.el9_2RHSA-2023:2655

Fixed in:1:8.19.4-1.16.20.2.1.el9_0RHSA-2023:5533

Fixed in:1:8.19.3-1.16.19.1.1.el9_2RHSA-2023:2655

npmRed Hat / RHEL

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.x86_64::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.aarch64::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.ppc64le::nodejs:18RHSA-2023:2654

Fixed in:1:9.5.0-1.18.14.2.2.module+el9.2.0.z+18497+a402347c.s390x::nodejs:18RHSA-2023:2654

Fixed in:1:8.19.3-1.16.19.1.1.el9_2RHSA-2023:2655

Fixed in:1:8.19.4-1.16.20.2.1.el9_0RHSA-2023:5533

Node.jsWindows application

Affected:16.0.0 16.19.1Fixed in:16.19.1Node.js Foundation

Affected:18.0.0 18.14.1Fixed in:18.14.1Node.js Foundation

Affected:19.0.0 19.6.1Fixed in:19.6.1Node.js Foundation

Node.js (LTS)Windows application

Affected:18.0.0 18.14.1Fixed in:18.14.1Node.js Foundation

Affected:16.0.0 16.19.1Fixed in:16.19.1Node.js Foundation

Affected:19.0.0 19.6.1Fixed in:19.6.1Node.js Foundation

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.13%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Patch1

github.com

Exploit1

hackerone.com

Vendor Advisory1

github.com

Release Notes1

github.com

Related Vulnerabilities

Other CWE-93 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-61884	High	7.5	96%	KEV + Ransom	-
CVE-2022-0666	High	7.5	44%	-	Fix
CVE-2016-3115	Medium	6.4	37%	-	Fix
CVE-2024-20337	High	8.2	30%	-	Fix
CVE-2021-39172	High	8.8	29%	-	Fix
CVE-2016-4975	Medium	6.1	20%	-	Fix

Common questions

How do I fix CVE-2023-23936?

Published advisories record a fix for 27 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-23936 being actively exploited?

Not that we know of. CVE-2023-23936 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.1% is the estimated probability that it will be exploited in the next 30 days. That is higher than 65% of all scored CVEs.

How severe is CVE-2023-23936?

CVE-2023-23936 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-23936 affect?

Published advisories record a fix for node-undici (Debian), nodejs (Rocky), nodejs (Red Hat / RHEL), nodejs-debuginfo (Rocky), and 23 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-23936

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.