Medium 6.5Published Dec 5, 2022

CVE-2022-35256The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects nodejs node.js and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for nodejs node.js Exploited in the last 30 days

The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-444
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

nodejs node.js nodejs:node.js	from 14.0.0 through 14.14.0; from 14.15.0 before 14.20.1; from 16.0.0 through 16.12.0; from 16.13.0 before 16.17.1; from 18.0.0 before 18.9.1	NVD
llhttp llhttp llhttp:llhttp	before 6.0.10	NVD
siemens sinec_ins siemens:sinec_ins	before 1.0; 1.0; 1.0; 1.0	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdf	third-party-advisory
https://hackerone.com/reports/1675191	exploit, issue-tracking, third-party-advisory
https://www.debian.org/security/2023/dsa-5326	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.