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Critical, CVSS 9.8amended

YouTransfer has an issue in the sendmail transport integration that allows arbitrary code execution

CVE-2026-50880GHSA-68mc-h6h8-79wj

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm youtransfer

    Affected
    <= 1.0.6
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2026-50880: 0.48% estimated exploitation activity in the next 30 days; percentile 41.21 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

An issue in the sendmail transport integration component of YouTransfer v1.0.6 allows attackers to execute arbitrary code via supplying a crafted request.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-68mc-h6h8-79wj

  2. Revision 2 · amended ·

    Amended from osv record GHSA-68mc-h6h8-79wj

  3. Revision 1 · created ·

    Published from ghsa record GHSA-68mc-h6h8-79wj

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-50880

Advisory: YouTransfer has an issue in the sendmail transport integration that allows arbitrary code execution
IDs: CVE-2026-50880, GHSA-68mc-h6h8-79wj
Record: https://patchnext.com/advisories/cve-2026-50880 (revision 3, source checked 26 Oct 2026, 13:01 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm youtransfer: affected <= 1.0.6

## Suggested inspection (read-only)
- `npm ls youtransfer --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on youtransfer.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-68mc-h6h8-79wj (GitHub-reviewed advisory GHSA-68mc-h6h8-79wj lists affected ranges: npm youtransfer >=0 <=1.0.6)
- Verified: https://osv.dev/vulnerability/GHSA-68mc-h6h8-79wj (OSV record GHSA-68mc-h6h8-79wj lists affected ranges: npm youtransfer >=0 <=1.0.6)

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