Which versions of lodash-lib are malicious?

The following npm versions of lodash-lib are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate lodash-lib if I installed it?

lodash-lib is a typosquat — you almost certainly intended a legitimately-named package. Remove lodash-lib, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed lodash-lib — how do I know if it already compromised me?

If lodash-lib was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is lodash-lib part of a known attack campaign?

Yes — lodash-lib is associated with the IN-MAL-2026-018248 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find lodash-lib across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for lodash-lib (version 1.0.0).

Malicious package

lodash-libnpm

lodash-lib is a confirmed malicious npm package (MAL-2026-14182) that typosquats a legitimate package to trick installs (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in lodash-lib (npm)

MAL-2026-14182

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall lodash-lib

What this malware does

[email protected] typosquats lodash; index.js exports an empty object and the package's only real behavior lives in scripts/postinstall.js. On npm install, the postinstall script XOR-decodes (key 'stf2026') a URL and PowerShell bridge command from integer arrays, POSTs the installer's platform label to a hardcoded bare-IP endpoint http://193.70.34.101:20099/vote (host assembled from a string array to avoid literal scanning), then downloads https://github.com/bebraz1/qPzM50V1AKG0rVlH/releases/download/null/main.exe to %TEMP%/main.exe and spawns it detached with stdio ignored. On WSL, a decoded powershell.exe command bridges the download-and-exec to the Windows host. The GitHub repository hosting the binary is unrelated to the package publisher, the URL is unpinned/unversioned, no hash or signature is verified, and cover-story naming ('addon', 'telemetry') is used throughout.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

3ae5d5ee58992e051846753bb190ad3f357538cf5ed570ac825b8b7c9d2a3619

Detection & response playbook

Typosquat

Find it
Search your lockfiles and build artifacts for lodash-lib (version 1.0.0).
If you installed it — respond
lodash-lib is a typosquat — you almost certainly intended a legitimately-named package. Remove lodash-lib, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If lodash-lib was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. lodash-lib on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-018248

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks lodash-lib-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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