// For flags

CVE-2023-30589

nodejs: HTTP Request Smuggling via Empty headers separated by CR

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

A vulnerability has been identified in the Node.js, where llhttp parser in the http module in Node.js does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling (HRS).

It was discovered that Node.js incorrectly handled the use of invalid public keys while creating an x509 certificate. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 23.10. It was discovered that Node.js incorrectly handled the use of CRLF sequences to delimit HTTP requests. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to obtain unauthorised access. This issue only affected Ubuntu 23.10.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-04-13 CVE Reserved
  • 2023-06-30 CVE Published
  • 2025-04-30 CVE Updated
  • 2025-04-30 First Exploit
  • 2025-05-18 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nodejs
Search vendor "Nodejs"
 Node.js
Search vendor "Nodejs" for product "Node.js"
 >= 16.0.0 < 16.20.1
Search vendor "Nodejs" for product "Node.js" and version " >= 16.0.0 < 16.20.1"
-
Affected
Nodejs
Search vendor "Nodejs"
 Node.js
Search vendor "Nodejs" for product "Node.js"
 >= 18.0.0 < 18.16.1
Search vendor "Nodejs" for product "Node.js" and version " >= 18.0.0 < 18.16.1"
-
Affected
Nodejs
Search vendor "Nodejs"
 Node.js
Search vendor "Nodejs" for product "Node.js"
 >= 20.0.0 < 20.3.1
Search vendor "Nodejs" for product "Node.js" and version " >= 20.0.0 < 20.3.1"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 38
Search vendor "Fedoraproject" for product "Fedora" and version "38"
-
Affected