CVE-2019-10758 — 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. A misuse of the `vm` dependency to perform `exec` commands in a non-safe environment.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / mongo	express — All versions prior to version 0.54.0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-12-10. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-12-24T21:08:36.000Z
• Last modified: 2025-10-21T23:35:54.793Z
• Added to CISA KEV: 2021-12-10
• BOD 22-01 due: 2022-06-10

09References

• snyk.io — https://snyk.io/vuln/SNYK-JS-MONGOEXPRESS-473215