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Critical, CVSS 9.9Exploited · CISA KEVamended

Remote Code Execution Vulnerability in NPM mongo-express

CVE-2019-10758GHSA-h47j-hc6x-h3qq

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (mongo-express 0.54.0), redeploy, then verify what is actually installed.

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

Sources

Severity and exploitation
Exploitation
Confirmed: listed in the CISA Known Exploited Vulnerabilities catalog.
CVSS
9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H
EPSS
  • CVE-2019-10758: 84.73% estimated exploitation activity in the next 30 days; percentile 99.71 (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.

Impact Remote code execution on the host machine by any authenticated user. Proof Of Concept Launching mongo-express on a Mac, pasting the following into the "create index" field will pop open the Mac calculator: Patches Users should upgrade to version 0.54.0 Workarounds Is there a way for users to fix or remediate the vulnerability without upgrading? For more information If you have any questions or comments about this advisory: Open an issue in example link to repo Email us at example email address Thanks @JLLeitschuh for finding and reporting this vulnerability This vulnerability has been exploited in the wild.

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

    Amended from ghsa record GHSA-h47j-hc6x-h3qq

  2. Revision 2 · evidence added ·

    CISA KEV confirmed exploitation for CVE-2019-10758 (date added 2021-12-10). Customer workflow unchanged.

  3. Revision 1 · created ·

    Published from osv record GHSA-h47j-hc6x-h3qq

Agent brief

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# Patch Next advisory brief: CVE-2019-10758

Advisory: Remote Code Execution Vulnerability in NPM mongo-express
IDs: CVE-2019-10758, GHSA-h47j-hc6x-h3qq
Record: https://patchnext.com/advisories/cve-2019-10758 (revision 3, source checked 26 Oct 2026, 12:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
Exploitation: confirmed: listed in the CISA Known Exploited Vulnerabilities catalog.
Vendor response: Vendor fix available; fixed versions by package: mongo-express 0.54.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm mongo-express: affected < 0.54.0; fixed in 0.54.0

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

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on mongo-express.
- 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?
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-h47j-hc6x-h3qq (OSV record GHSA-h47j-hc6x-h3qq lists affected ranges: npm mongo-express >=0 <0.54.0 (fixed))
- Verified: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json (CISA added CVE-2019-10758 to the Known Exploited Vulnerabilities catalog on 2021-12-10.)
- Verified: https://github.com/advisories/GHSA-h47j-hc6x-h3qq (GitHub-reviewed advisory GHSA-h47j-hc6x-h3qq lists affected ranges: npm mongo-express >=0 <0.54.0)
- Verified: https://www.cisa.gov/known-exploited-vulnerabilities-catalog (CISA added CVE-2019-10758 to the Known Exploited Vulnerabilities catalog on 2021-12-10.)

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