MalwarePublished 15 Jun 2026Updated 8 Jul 2026

mddriver (npm) · Malicious Code

Affects mddriverSource GCVE Database

Malicious package : remove mddriver and rotate any secrets on hosts that installed it.

Data as of 9 Jul 2026, 10:05 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-5791

What to do

Remove mddriver from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmmddriver	Affected 1.8.1 – 1.8.6 6 affected builds	Fixed in–

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Description

The npm package 'mddriver' is a malicious typosquatting package that executes arbitrary JavaScript code fetched dynamically from an anonymous, mutable external source. It masquerades as a MongoDB connection driver but contains code that runs any JavaScript served by the attacker at runtime, leading to full system compromise. The affected versions are 1.8.1 through 1.8.6. Systems with this package installed should be considered fully compromised, and all secrets and keys must be rotated immediately. Removal of the package alone does not guarantee eradication of all malicious components.

Impact

Any system with the affected 'mddriver' package installed or running is fully compromised, as the package executes arbitrary code fetched from an attacker-controlled source. This can lead to unauthorized access, data theft, and persistent malicious control. All secrets and keys on the compromised system should be considered exposed and must be rotated from a secure environment. Removal of the package does not guarantee removal of all malicious artifacts or backdoors.

Defensive guidance

Immediate removal of the 'mddriver' package is required. All secrets, credentials, and keys stored on the compromised system must be rotated from a different, secure computer. Due to the high risk of full system compromise, consider rebuilding the affected systems from trusted backups or reinstalling the operating system to ensure complete eradication of malicious code.

Summary

The 'mddriver' npm package versions 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, and 1.8.6 contain malicious code that, upon requiring the package, executes an immediately invoked function expression (IIFE) that fetches base64-encoded JSON from an anonymous paste host. The content field of the fetched JSON is executed via a Function constructor, allowing arbitrary code execution controlled by the attacker. The package is a typosquat targeting developers searching for legitimate MongoDB drivers, with the shipped code being a copy of Node's built-in 'path' module plus the malicious dropper. This results in full compromise of any system running the package.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Jul 2026, 10:05 UTC

Technical details

References

Community reviews