What does the etsyapp malware do?

The package etsyapp was found to contain malicious code. The OpenSSF Package Analysis project identified 'etsyapp' @ 1.0.0 (npm) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity. - The package executes one or more commands associated with malicious behavior.

Which versions of etsyapp are malicious?

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

How do I remediate etsyapp if I installed it?

Remove etsyapp 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 etsyapp — how do I know if it already compromised me?

If etsyapp 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.

How do I find etsyapp across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for etsyapp (version 1.0.0).

Malicious package

etsyappnpm

Advisory published Apr 22, 2026Updated Apr 23, 2026

etsyapp is a confirmed malicious npm package (MAL-2026-2990) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in etsyapp (npm)

MAL-2026-2990

Immediate action

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

npm uninstall etsyapp

What this malware does

The package etsyapp was found to contain malicious code.

The OpenSSF Package Analysis project identified 'etsyapp' @ 1.0.0 (npm) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.
The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

919ce430631b9f294e4f67032799f5df86d6c943a20c330407641916d7aab63d

4d3ba88687c2454c8371f948d388d1aa11c628cc010daeee014c9dd60ad1c193

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for etsyapp (version 1.0.0).
If you installed it — respond
Remove etsyapp 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 etsyapp 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. etsyapp 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.

Credits

Amazon Inspector · finder
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks etsyapp-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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