Which versions of solidity-lock are malicious?

The following npm versions of solidity-lock are flagged malicious: 2.21.0. Treat any of these as compromised.

How do I remediate solidity-lock if I installed it?

Remove solidity-lock from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed solidity-lock — how do I know if it already compromised me?

If solidity-lock 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 solidity-lock part of a known attack campaign?

Yes — solidity-lock is associated with the IN-MAL-2026-020750 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 solidity-lock across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for solidity-lock (version 2.21.0).

Malicious package

solidity-locknpm

Advisory published Sep 30, 2026Updated Sep 30, 2026

solidity-lock is a confirmed malicious npm package (MAL-2026-17302) that executes malicious code on install (malicious version 2.21.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in solidity-lock (npm)

MAL-2026-17302

Immediate action

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

npm uninstall solidity-lock

What this malware does

The package's declared main index.js is a trivial no-op Express middleware whose only real effect is to require('./lib/config'), a ~4 MB obfuscator.io-style bundle (rotating string array, hex-escaped entries, self-executing IIFE) that runs at import time. Package identity does not match the shipped code: package.json name is 'solidity-lock' with a vulnerability-management description, keywords advertise a logger ('fast','logger','stream','json'), scripts are 'smoke:pino'/'smoke:file', the README is a copy of pino's README with the name changed, and index.d.ts references pinojs/pino — three inconsistent cover stories layered over the opaque payload. axios ^1.10.0 is declared as a dependency but is not referenced anywhere in the plain-text sources; the only plausible consumer is the obfuscated blob, consistent with outbound HTTP from the hidden payload. Any process that requires this package executes the obfuscated bundle in-process with full host privileges.

Malicious versions

1 flagged

2.21.0

Indicators of compromise (SHA-256)

7e283fd2d07e81705e23d5756d15edd4ff4dc7a074d375111155ef9dca1fd9b8

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for solidity-lock (version 2.21.0).
If you installed it — respond
Remove solidity-lock from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If solidity-lock 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. solidity-lock on npm has been identified as a malicious package (version 2.21.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020750

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks solidity-lock-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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