Which versions of env-express-cli are malicious?

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

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

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

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

Yes — env-express-cli is associated with the RLMA-2026-01756 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-express-cli across my projects, lockfiles, and CI pipelines?

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

Malicious package

env-express-clinpm

Advisory published Mar 24, 2026Updated Apr 7, 2026

env-express-cli is a confirmed malicious npm package (MAL-2026-2362) 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-express-cli (npm)

MAL-2026-2362

Immediate action

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

npm uninstall env-express-cli

What this malware does

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

Malicious versions

1 flagged

2.5.5

Indicators of compromise (SHA-256)

af68b08e09f0e721494f17679d046923930a0e4e6ecc232acd3607820b5fee7d

c836e2eb4b78603e8fa096a1eb11b7b3b9e49a91bcfe0b82be74b1bdd1c58a03

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for env-express-cli (version 2.5.5).
If you installed it — respond
Remove env-express-cli 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-express-cli 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-express-cli 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-2026-01756

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks env-express-cli-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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