Vulnerabilities in pkg:npm/connect-multiparty

PACKAGE
Advisory Identifier: GHSA-w2xw-44r3-4v9g
Share
Advisory Summary

CVE-2022-29623 is a HIGH (CVSS 7.8) connect-multiparty allows arbitrary file upload vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Connect multiparty libraries in the npm ecosystem. The issue involves connect-multiparty allows arbitrary file upload. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/connect-multiparty

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/connect-multiparty. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-w2xw-44r3-4v9g CVE-2022-29623 HIGH Connect-Multiparty allows arbitrary file upload

CVE-2022-29623 at a Glance

CVE Identifier CVE-2022-29623
GHSA Identifier GHSA-w2xw-44r3-4v9g
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Connect multiparty
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-29623

To remediate this vulnerability, upgrade all affected Connect multiparty dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

connect-multiparty fixed: Latest secure release 
npm install connect-multiparty@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls connect-multiparty

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-29623, inspect your project dependencies using npm:

npm ls connect-multiparty

Analyze the terminal output to locate any version of Connect multiparty in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls connect-multiparty command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Connect multiparty, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows attackers to execute arbitrary code via a crafted PDF file. NOTE: the Supplier has not verified this vulnerability report.

CVE-2022-29623 Affected Connect multiparty Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
connect-multiparty
npm/connect-multiparty
npm
≤ 2.2.0

References

NVD — CVE-2022-29623 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-29623
Connect multiparty Source Repository REPOSITORY
https://github.com/expressjs/connect-multiparty
Connect multiparty Release RELEASE
https://github.com/expressjs/connect-multiparty/releases/tag/2.2.0
www.npmjs.com/package/connect-mul... WEB
https://www.npmjs.com/package/connect-multiparty
www.youtube.com/watch WEB
https://www.youtube.com/watch?v=i3xJR-91rrM

Frequently Asked Questions

What is CVE-2022-29623?
CVE-2022-29623 is a security vulnerability in Connect multiparty involving Connect-Multiparty allows arbitrary file upload under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Connect multiparty versions are affected?
Affected versions include releases prior to current release patches across affected packages: connect-multiparty.
What version fixes CVE-2022-29623?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is connect-multiparty affected?
Yes, connect-multiparty is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2022-29623?
CVE-2022-29623 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-29623?
CVE-2022-29623 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check npm dependencies for CVE-2022-29623?
Run the dependency tree command: 'npm ls connect-multiparty'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-w2xw-44r3-4v9g",
  "modified" : "2025-05-20T19:40:43Z",
  "published" : "2022-05-17T00:01:45Z",
  "aliases" : [ "CVE-2022-29623" ],
  "summary" : "Connect-Multiparty allows arbitrary file upload",
  "details" : "An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows attackers to execute arbitrary code via a crafted PDF file. NOTE: the Supplier has not verified this vulnerability report.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "connect-multiparty"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-29623"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/expressjs/connect-multiparty"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/expressjs/connect-multiparty/releases/tag/2.2.0"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/connect-multiparty"
  }, {
    "type" : "WEB",
    "url" : "https://www.youtube.com/watch?v=i3xJR-91rrM"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-20T19:40:43Z",
    "nvd_published_at" : "2022-05-16T14:15:00Z"
  }
}