Which versions of node-calculator-190a are malicious?

The following npm versions of node-calculator-190a are flagged malicious: 4.0.0. Treat any of these as compromised.

How do I remediate node-calculator-190a if I installed it?

Remove node-calculator-190a 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 node-calculator-190a — how do I know if it already compromised me?

If node-calculator-190a 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 node-calculator-190a part of a known attack campaign?

Yes — node-calculator-190a is associated with the RLMA-2025-06406 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 node-calculator-190a across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for node-calculator-190a (version 4.0.0).

Malicious package

node-calculator-190anpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

node-calculator-190a is a confirmed malicious npm package (MAL-2025-192826) that executes malicious code on install (malicious version 4.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in node-calculator-190a (npm)

MAL-2025-192826

Immediate action

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

npm uninstall node-calculator-190a

What this malware does

The package node-calculator-190a was found to contain malicious code.

Malicious versions

1 flagged

4.0.0

Indicators of compromise (SHA-256)

a5039d7639a71582b16d68024a3b776f024d6aa00686adf6c53c4aaa23f10a4c

b32e5086f5a10acce38971e5ccbf0edbf50a0027033b7b9e251dee1e0facd021

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for node-calculator-190a (version 4.0.0).
If you installed it — respond
Remove node-calculator-190a 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 node-calculator-190a 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. node-calculator-190a on npm has been identified as a malicious package (version 4.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06406

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks node-calculator-190a-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