What does the euskalplantxa malware do?

The package euskalplantxa was found to contain malicious code. The OpenSSF Package Analysis project identified 'euskalplantxa' @ 5.8.1 (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 euskalplantxa are malicious?

The following npm versions of euskalplantxa are flagged malicious: 5.8.1. Treat any of these as compromised.

How do I remediate euskalplantxa if I installed it?

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

If euskalplantxa 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 euskalplantxa across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for euskalplantxa (version 5.8.1).

Malicious package

euskalplantxanpm

Advisory published Jan 30, 2026Updated Feb 2, 2026

euskalplantxa is a confirmed malicious npm package (MAL-2026-609) that executes malicious code on install (malicious version 5.8.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in euskalplantxa (npm)

MAL-2026-609

Immediate action

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

npm uninstall euskalplantxa

What this malware does

The package euskalplantxa was found to contain malicious code.

The OpenSSF Package Analysis project identified 'euskalplantxa' @ 5.8.1 (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

5.8.1

Indicators of compromise (SHA-256)

d4a9828262d2d37a526c3f532f4c1306a7f099dc2b229ce8e92694233a3c75a7

fa75d57475518e4ef5865992ffdf7b0137f3af90a6672bb44113312d6598fe5f

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for euskalplantxa (version 5.8.1).
If you installed it — respond
Remove euskalplantxa 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 euskalplantxa 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. euskalplantxa on npm has been identified as a malicious package (version 5.8.1 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 euskalplantxa-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