Which versions of action-setup-enos are malicious?

The following npm versions of action-setup-enos are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate action-setup-enos if I installed it?

Remove action-setup-enos 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 action-setup-enos — how do I know if it already compromised me?

If action-setup-enos 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 action-setup-enos part of a known attack campaign?

Yes — action-setup-enos is associated with the RLMA-2026-01876 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 action-setup-enos across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for action-setup-enos (version 0.0.1).

Malicious package

action-setup-enosnpm

Advisory published Apr 16, 2026Updated Apr 23, 2026

action-setup-enos is a confirmed malicious npm package (MAL-2026-2722) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in action-setup-enos (npm)

MAL-2026-2722

Immediate action

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

npm uninstall action-setup-enos

What this malware does

The package action-setup-enos was found to contain malicious code.

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

41d189a1dcc311d5dca4bd162e69c897cb91432484c1e083cd992cd06aceccef

2a8c231ffd75db68f6571ecaba491b827f5c86e682716dadadf47c74a979f80a

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for action-setup-enos (version 0.0.1).
If you installed it — respond
Remove action-setup-enos 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 action-setup-enos 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. action-setup-enos on npm has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01876

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks action-setup-enos-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

All malware advisories How O3 detects malware Vulnerability database