Home/CVE/The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated wit
CVE

CVE-2022-35256

The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated wit

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.

MEDIUM · CVSS 6.5 EPSS 0.03694
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
▤

Affected Products & Versions

9
nodejs node.js>= 14.0.0 and <= 14.14.0
nodejs node.js>= 14.15.0 and < 14.20.1
nodejs node.js>= 16.0.0 and <= 16.12.0
nodejs node.js>= 16.13.0 and < 16.17.1
nodejs node.js>= 18.0.0 and < 18.9.1
llhttp< 6.0.10
siemens sinec ins< 1.0
siemens sinec insall versions
⚠

Public Exploits & PoCs

1
pochackerone.com · 1675191hackerone.com
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Dec 2022 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

25
msrcCVE-2022-35256
suse-csafopenSUSE-SU-2024:12370-1
suse-csafopenSUSE-SU-2024:12376-1
usnUSN-6491-1
rhsaRHSA-2023:1533Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
https://www.debian.org/security/2023/dsa-5326Third Party Advisory
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