Cyber Resilience

CVE-2023-30589

HighPublic PoC

Published: 01 July 2023

Published
01 July 2023
Modified
04 November 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.0192 83.7th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-30589 is a high-severity an unspecified weakness vulnerability in Nodejs Node.Js. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 16.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

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

CWE(s)
NVD-CWE-Other

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

nodejs
node.js
16.0.0 — 16.20.1 · 18.0.0 — 18.16.1 · 20.0.0 — 20.3.1
fedoraproject
fedora
37, 38

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References