Which versions of eslint-validation-cli are malicious?

The following npm versions of eslint-validation-cli are flagged malicious: 2.12.1. Treat any of these as compromised.

How do I remediate eslint-validation-cli if I installed it?

Remove eslint-validation-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 eslint-validation-cli — how do I know if it already compromised me?

If eslint-validation-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 eslint-validation-cli part of a known attack campaign?

Yes — eslint-validation-cli is associated with the RLMA-2025-04516, RLUA-2025-05789 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 eslint-validation-cli across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for eslint-validation-cli (version 2.12.1).

Malicious package

eslint-validation-clinpm

Advisory published Aug 28, 2025Updated Dec 2, 2025

eslint-validation-cli is a confirmed malicious npm package (MAL-2025-41556) that executes malicious code on install (malicious version 2.12.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in eslint-validation-cli (npm)

MAL-2025-41556

Immediate action

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

npm uninstall eslint-validation-cli

Malicious versions

1 flagged

2.12.1

Indicators of compromise (SHA-256)

a6064dd32c48af95dcb34d56c104bd64758385c9a6419708138ae57eec45a3c6

6191dc73b52cc740c420a0acaf0cef8cc35002d085d57aca5460c32b3cd7d79c

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for eslint-validation-cli (version 2.12.1).
If you installed it — respond
Remove eslint-validation-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 eslint-validation-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. eslint-validation-cli on npm has been identified as a malicious package (version 2.12.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04516RLUA-2025-05789

References

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks eslint-validation-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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