HIGH

CVE-2023-30589

CVSS v3

7.5

HIGH

EPSS Score

3.9 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for node.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

llhttpnpmall versions · fixed in 8.1.1
nodeBitnamifrom 16.0.0 · fixed in 16.20.1and 1 other package
nodejsAlmaLinux:9all versions · fixed in 1:16.20.1-1.el9_2and 3 other packages
nodejsAlmaLinux:8all versions · fixed in 1:16.20.1-1.module_el8.8.0+3594+e74fe53fand 3 other packages
nodejs-develAlmaLinux:9all versions · fixed in 1:18.16.1-1.module_el9.2.0+31+cbae0c8e
nodejs-nodemonAlmaLinux:9all versions · fixed in 2.0.20-2.module_el9.2.0+29+de583a0b
nodejs-nodemonAlmaLinux:8all versions · fixed in 2.0.20-3.module_el8.8.0+3586+d4fc0b72
nodejs-packagingAlmaLinux:9all versions · fixed in 2021.06-4.module_el9.1.0+13+d9a595eaand 1 other package

4 more package ranges on OSV.dev

Vendor advisories

CVE-2023-30589 Red Hat Product Security190 products fixed · 19 known affected
nodejs: HTTP Request Smuggling via Empty headers separated by CR
nodejs-devel (nodejs:14) as a component of Red Hat Enterprise Linux 8 · nodejs-docs (nodejs:14) as a component of Red Hat Enterprise Linux 8 · nodejs-full-i18n (nodejs:14) as a component of Red Hat Enterprise Linux 8
ICSA-24-046-15 CISA1 known affected
Siemens SINEC NMS
SINEC NMS
SSA-943925 Siemens ProductCERT1 known affected
SSA-943925: Multiple Vulnerabilities in SINEC NMS before V2.0 SP1
SINEC NMS
RHSA-2023:5533 Red Hat Product Security34 products fixed
Red Hat Security Advisory: nodejs security, bug fix, and enhancement update
RHSA-2023:5361 Red Hat Product Security30 products fixed
Red Hat Security Advisory: nodejs:16 security, bug fix, and enhancement update
RHSA-2023:4537 Red Hat Product Security30 products fixed
Red Hat Security Advisory: nodejs:16 security, bug fix, and enhancement update

3 more advisories

Full record on NVD

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

Technical details

Published: 2023-07-01

Frequently asked questions

What is CVE-2023-30589?

Is CVE-2023-30589 actively exploited?

Active exploitation of CVE-2023-30589 has not been confirmed. Its EPSS score was 3.9% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-30589?

CVE-2023-30589 has a CVSS v3 base score of 7.5 (HIGH severity).

Running node? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? CVE Watch alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database