Description
The llhttp parser in the http module in Node v20.2.0 does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS).

The CR character (without LF) is sufficient to delimit HTTP header fields in the llhttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This impacts all Node.js active versions: v16, v18, and, v20
Published: 2023-06-30
Score: 7.5 High
EPSS: 1.9% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-3886-1 nodejs security update
Debian DSA Debian DSA DSA-5589-1 nodejs security update
EUVD EUVD EUVD-2023-2033 The llhttp parser in the http module in Node v20.2.0 does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS). The CR character (without LF) is sufficient to delimit HTTP header fields in the llhttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This impacts all Node.js active versions: v16, v18, and, v20
Github GHSA Github GHSA GHSA-cggh-pq45-6h9x llhttp vulnerable to HTTP request smuggling
Ubuntu USN Ubuntu USN USN-6735-1 Node.js vulnerabilities
History

Tue, 04 Nov 2025 17:30:00 +0000

Type Values Removed Values Added
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.01422}

epss

{'score': 0.01461}


Thu, 13 Feb 2025 17:00:00 +0000

Type Values Removed Values Added
Description The llhttp parser in the http module in Node v20.2.0 does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS). The CR character (without LF) is sufficient to delimit HTTP header fields in the llhttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This impacts all Node.js active versions: v16, v18, and, v20 The llhttp parser in the http module in Node v20.2.0 does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS). The CR character (without LF) is sufficient to delimit HTTP header fields in the llhttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This impacts all Node.js active versions: v16, v18, and, v20

Subscriptions

Fedoraproject Fedora
Nodejs Node.js
Redhat Enterprise Linux Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2025-11-04T16:10:09.729Z

Reserved: 2023-04-13T01:00:12.086Z

Link: CVE-2023-30589

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-07-01T00:15:10.293

Modified: 2025-11-04T17:15:36.953

Link: CVE-2023-30589

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-06-20T00:00:00Z

Links: CVE-2023-30589 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses