Vulnerabilities in pkg:npm/youtransfer

PACKAGE

Advisory Identifier: GHSA-68mc-h6h8-79wj

Advisory Summary

CVE-2026-50880 is a CRITICAL (CVSS 9.8) youtransfer has an issue vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Youtransfer libraries in the npm ecosystem. The issue involves youtransfer has an issue in the sendmail transport integration that allows arbitrary code execution. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)

Package Vulnerability Intelligence

pkg:npm/youtransfer

1 Known Advisory Record(s)

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

Advisory ID	CVE / NVD	Severity	Summary
GHSA-68mc-h6h8-79wj	CVE-2026-50880	CRITICAL	YouTransfer has an issue in the sendmail transport integration that allows arbitrary code execution

CVE-2026-50880 at a Glance

CVE Identifier CVE-2026-50880

GHSA Identifier GHSA-68mc-h6h8-79wj

Severity CRITICAL

CVSS v3.1 Base Score 9.8

CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')

Affected Product Youtransfer

Package Ecosystem npm

Published Date 2026-06-15

Last Updated 2026-08-26

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity High (I:H)

Availability High (A:H)

How to Fix CVE-2026-50880

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

youtransfer fixed: Latest secure release

npm install youtransfer@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 youtransfer

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-50880, inspect your project dependencies using npm:

npm ls youtransfer

Analyze the terminal output to locate any version of Youtransfer 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 youtransfer 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Youtransfer, 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 issue in the sendmail transport integration component of YouTransfer v1.0.6 allows attackers to execute arbitrary code via supplying a crafted request.

CVE-2026-50880 Affected Youtransfer Versions

1 component(s)

Product / Package	Ecosystem	Affected Versions	Fixed Version
youtransfer npm/youtransfer	npm	≤ 1.0.6

References

NVD — CVE-2026-50880 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-50880

Youtransfer Source Repository REPOSITORY

https://gist.github.com/pyuysig/4013f4f10f74b3fded7ddf41b6d36ae5

Youtransfer Source Repository REPOSITORY

https://github.com/YouTransfer/YouTransfer

Frequently Asked Questions

What is CVE-2026-50880?

CVE-2026-50880 is a security vulnerability in Youtransfer involving YouTransfer has an issue in the sendmail transport integration that allows arbitrary code execution under CWE-94: Improper Control of Generation of Code ('Code Injection').

Which Youtransfer versions are affected?

Affected versions include releases prior to current release patches across affected packages: youtransfer.

What version fixes CVE-2026-50880?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

Is youtransfer affected?

Yes, youtransfer 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-2026-50880?

CVE-2026-50880 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

What CWE is associated with CVE-2026-50880?

CVE-2026-50880 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).

How can I check npm dependencies for CVE-2026-50880?

Run the dependency tree command: 'npm ls youtransfer'. 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-68mc-h6h8-79wj",
  "modified" : "2026-08-26T15:04:18Z",
  "published" : "2026-06-15T21:30:41Z",
  "aliases" : [ "CVE-2026-50880" ],
  "summary" : "YouTransfer has an issue in the sendmail transport integration that allows arbitrary code execution",
  "details" : "An issue in the sendmail transport integration component of YouTransfer v1.0.6 allows attackers to execute arbitrary code via supplying a crafted request.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "youtransfer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-50880"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/pyuysig/4013f4f10f74b3fded7ddf41b6d36ae5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/YouTransfer/YouTransfer"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-26T15:04:18Z",
    "nvd_published_at" : "2026-06-15T20:16:30Z"
  }
}

CVSS V3

9.8 CRITICAL