CVE-2019-10758

Remote Code Execution Vulnerability in NPM mongo-express

9.9 CriticalIn KEVPublic exploitFix available

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method. A misuse of the vm dependency to perform exec commands in a non-safe environment.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

84.7%Up 80.7 points since Apr 14, 2021

What each source reports

NVD Score used 9.9

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method. A misuse of the vm dependency to perform exec commands in a non-safe environment.

Record: CVE-2019-10758
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0: 9.0 HighAV:N/AC:L/Au:S/C:C/I:C/A:C
Weakness: CWE-94
Updated: 2026-11-02

CVE List 9.9

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method. A misuse of the vm dependency to perform exec commands in a non-safe environment.

Record: CVE-2019-10758
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

EUVDEUVD-2019-0791 9.9

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method. A misuse of the vm dependency to perform exec commands in a non-safe environment.

Record: EUVD-2019-0791
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-h47j-hc6x-h3qq 9.9

Remote Code Execution Vulnerability in NPM mongo-express

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:

this.constructor.constructor("return process")().mainModule.require('child_process').execSync('/Applications/Calculator.app/Contents/MacOS/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.

Record: GHSA-h47j-hc6x-h3qq
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H
Weakness: CWE-78, CWE-94
Updated: 2026-11-02

CISA KEV No score

MongoDB mongo-express Remote Code Execution Vulnerability

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method.

Record: CVE-2019-10758
Updated: 2026-11-02

OSV 9.9

mongo-express before 0.54.0 is vulnerable to Remote Code Execution via endpoints that uses the toBSON method. A misuse of the vm dependency to perform exec commands in a non-safe environment.

Record: CVE-2019-10758
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-h47j-hc6x-h3qq 9.9

Remote Code Execution Vulnerability in NPM mongo-express

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:

this.constructor.constructor("return process")().mainModule.require('child_process').execSync('/Applications/Calculator.app/Contents/MacOS/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.

Record: GHSA-h47j-hc6x-h3qq
CVSS 3.1: 9.9 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H
Weakness: CWE-78, CWE-94
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mongo-express` npm	before 0.54.0	0.54.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	masahiro331/CVE-2019-10758	2019-12-26
PoC in GitHub	lp008/CVE-2019-10758	2020-01-05
PoC in GitHub	CyberCTF/vulhub-mongo-express-cve-2019-10758	2026-10-08
Nuclei	mongo-express Remote Code Execution

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation, exploits
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-10758 is a critical vulnerability (CVSS 9.9) in Mongo-express Project Mongo-express, published December 24, 2019. CISA lists it as known to be exploited, since December 10, 2021. EUVD reports exploitation since December 10, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 84.7%, the 99th percentile. Fixed in mongo-express 0.54.0.

References

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