Which versions of env-cli-express are malicious?

The following npm versions of env-cli-express are flagged malicious: 2.5.5. Treat any of these as compromised.

How do I remediate env-cli-express if I installed it?

Remove env-cli-express 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 env-cli-express — how do I know if it already compromised me?

If env-cli-express 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 env-cli-express part of a known attack campaign?

Yes — env-cli-express is associated with the RLMA-2026-01752 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 env-cli-express across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for env-cli-express (version 2.5.5).

Malicious package

env-cli-expressnpm

Advisory published Mar 24, 2026Updated Apr 7, 2026

env-cli-express is a confirmed malicious npm package (MAL-2026-2358) that executes malicious code on install (malicious version 2.5.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in env-cli-express (npm)

MAL-2026-2358

Immediate action

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

npm uninstall env-cli-express

What this malware does

The package env-cli-express was found to contain malicious code.

Malicious versions

1 flagged

2.5.5

Indicators of compromise (SHA-256)

e76864a0e873b64a74cb974b462530a7f6fb9469e4ee19e5e21d5f7bb06cc340

46e9b2427571d9edd96dfaefcc677578a0296dcf49d197e9482a67b794ea440e

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for env-cli-express (version 2.5.5).
If you installed it — respond
Remove env-cli-express 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 env-cli-express 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. env-cli-express on npm has been identified as a malicious package (version 2.5.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01752

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks env-cli-express-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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