BlackTreeIndependent security intelligence
← Back to the CVE catalogue
Full vulnerability report · 2022
CVE-2022-35256High confidence

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

NodeJS · Node

6.5MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-332410 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-332410: Multiple Vulnerabilities in SINEC INS before V1.0 SP2 Update 1
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SINEC INS
Summary
The llhttp parser in the http module in Node.js v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.
Remediation
Update to V1.0 SP2 Update 1 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2022-38147

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

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.

What

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.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-444

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'). The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-444Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2023-0561Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.

Official advisory
BSI · German · WID-SEC-W-2022-1533Node.js: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Node.js ausnutzen, um Informationen offenzulegen oder Dateien zu manipulieren.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-1051Multiples vulnérabilités dans les produits IBM

d?id=CVE-2022-21824 Référence CVE CVE-2022-25857 https://www.cve.org/CVERecord?id=CVE-2022-25857 Référence CVE CVE-2022-32212 https://www.cve.org/CVERecord?id=CVE-2022-32212 Référence CVE CVE-2022-32213 https://www.cve.org/CVERecord?id=CVE-2022-32213 Référence CVE CVE-2022-32214 https://www.cve.org/CVERecord?id=CVE-2022-32214 Référence CVE CVE-2022-32215 https://www.cve.org/CVERecord?id=CVE-2022-32215 Référence CVE CVE-2022-32222 https://www.cve.org/CVERecord?id=CVE-2022-32222 Référence CVE CVE-2022-32223 https://www.cve.org/CVERecord?id=CVE-2022-32223 Référence CVE CVE-2022-35255 https://www.cve.org/CVERecord?id=CVE-2022-35255 Référence CVE CVE-2022-35256 https://www.cve.org/CVERecord?id=CVE-2022-35256 Référence CVE CVE-2022-35737 https://www.cve.org/CVERecord?id=CVE-2022-35737 Référence CVE CVE-2023-21830 https://www.cve.org/CVERecord?id=CVE-2023-21830 Référence CVE CVE-2023-21843 https://www.cve.org/CVERecord?id=CVE-2023-21843 Référence CVE CVE-2023-21930 https://www.cve.org/CVERecord?id=CVE-2023-21930 Référence CVE CVE-2023-21937 https://www.cve.org/CVERecord?id=CVE-2023-21937 Référence CVE CVE-2023-21938 https://www.cve.org/CVERecord?id=CVE-2023-21938 Référence CVE CVE-2023-21939 https://www.cve.org/CVERecord?id=CVE-2023-21939 Référence CVE CVE-2023-21954 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0362Multiples vulnérabilités dans les produits IBM

ord?id=CVE-2022-31129 Référence CVE CVE-2022-3171 https://www.cve.org/CVERecord?id=CVE-2022-3171 Référence CVE CVE-2022-32212 https://www.cve.org/CVERecord?id=CVE-2022-32212 Référence CVE CVE-2022-32213 https://www.cve.org/CVERecord?id=CVE-2022-32213 Référence CVE CVE-2022-32214 https://www.cve.org/CVERecord?id=CVE-2022-32214 Référence CVE CVE-2022-32215 https://www.cve.org/CVERecord?id=CVE-2022-32215 Référence CVE CVE-2022-32223 https://www.cve.org/CVERecord?id=CVE-2022-32223 Référence CVE CVE-2022-34165 https://www.cve.org/CVERecord?id=CVE-2022-34165 Référence CVE CVE-2022-35255 https://www.cve.org/CVERecord?id=CVE-2022-35255 Référence CVE CVE-2022-35256 https://www.cve.org/CVERecord?id=CVE-2022-35256 Référence CVE CVE-2022-36364 https://www.cve.org/CVERecord?id=CVE-2022-36364 Référence CVE CVE-2022-38708 https://www.cve.org/CVERecord?id=CVE-2022-38708 Référence CVE CVE-2022-38900 https://www.cve.org/CVERecord?id=CVE-2022-38900 Référence CVE CVE-2022-39135 https://www.cve.org/CVERecord?id=CVE-2022-39135 Référence CVE CVE-2022-39160 https://www.cve.org/CVERecord?id=CVE-2022-39160 Référence CVE CVE-2022-41881 https://www.cve.org/CVERecord?id=CVE-2022-41881 Référence CVE CVE-2022-42003 https://www.cve.org/CVERecord?id=CVE-2022-42003 Référence CVE CVE-2022-42004 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0015Multiples vulnérabilités dans les produits Siemens

VERecord?id=CVE-2022-1292 Référence CVE CVE-2022-2068 https://www.cve.org/CVERecord?id=CVE-2022-2068 Référence CVE CVE-2022-2097 https://www.cve.org/CVERecord?id=CVE-2022-2097 Référence CVE CVE-2022-2274 https://www.cve.org/CVERecord?id=CVE-2022-2274 Référence CVE CVE-2022-32212 https://www.cve.org/CVERecord?id=CVE-2022-32212 Référence CVE CVE-2022-32213 https://www.cve.org/CVERecord?id=CVE-2022-32213 Référence CVE CVE-2022-32215 https://www.cve.org/CVERecord?id=CVE-2022-32215 Référence CVE CVE-2022-32222 https://www.cve.org/CVERecord?id=CVE-2022-32222 Référence CVE CVE-2022-35255 https://www.cve.org/CVERecord?id=CVE-2022-35255 Référence CVE CVE-2022-35256 https://www.cve.org/CVERecord?id=CVE-2022-35256 Référence CVE CVE-2022-38773 https://www.cve.org/CVERecord?id=CVE-2022-38773 Référence CVE CVE-2022-43513 https://www.cve.org/CVERecord?id=CVE-2022-43513 Référence CVE CVE-2022-43514 https://www.cve.org/CVERecord?id=CVE-2022-43514 Référence CVE CVE-2022-45092 https://www.cve.org/CVERecord?id=CVE-2022-45092 Référence CVE CVE-2022-45093 https://www.cve.org/CVERecord?id=CVE-2022-45093 Référence CVE CVE-2022-45094 https://www.cve.org/CVERecord?id=CVE-2022-45094 Référence CVE CVE-2022-46823 https://www.cve.org/CVERecord?id=CVE-2022-46823 Référence CVE CVE-2022-47935 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2022-AVI-1041Multiples vulnérabilités dans les produits Stormshield

De multiples vulnérabilités ont été découvertes dans les produits Stormshield. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SINEC INS
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V1.0 SP2 Update 1 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 5 Dec 2022 · Last source change 30 Apr 2025, 22:24 UTC · CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2022-38147
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2022-35256 · cve.blacktree.nl