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Part of a larger attack: @years20 published 10 malicious packages. See the full campaign →
Malicious package

@years20/n8n-nodes-utils-helper-inpm

Advisory published Updated

@years20/n8n-nodes-utils-helper-i is a confirmed malicious npm package (MAL-2026-13918) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @years20/n8n-nodes-utils-helper-i (npm)

MAL-2026-13918
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @years20/n8n-nodes-utils-helper-i

What this malware does

The package presents itself as an n8n helper node but ships only a stub node (nodes/PwnNode.node.js) and a postinstall script (callback.js, duplicated as index.js) that performs installer-side reconnaissance and exfiltration on npm install. The postinstall shells out to collect user id, hostname, git configuration, running n8n processes, and locations of.n8n directories, base64-encodes the output, and sends it via HTTPS GET to https://jasabersama.id/portfolio-data.php with TLS verification disabled (rejectUnauthorized: false). The same postinstall performs an unpinned git clone of a personal GitHub repository (github.com/yadhukrishnam/CVE-2026-25053) into /tmp/gh-test during install, fetching third-party content unrelated to the package publisher on mutable HEAD. The referenced repository name embeds a CVE identifier consistent with an n8n supply-chain proof-of-concept payload.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

a7af79542abe3fa9739f9698f2af66524a43d1c7d13e3c4bd1a77108f73caf30

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for @years20/n8n-nodes-utils-helper-i (version 1.0.0).

  2. If you installed it — respond

    @years20/n8n-nodes-utils-helper-i is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @years20/n8n-nodes-utils-helper-i 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. @years20/n8n-nodes-utils-helper-i 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.

Campaign

IN-MAL-2026-017612

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @years20/n8n-nodes-utils-helper-i-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
@years20/n8n-nodes-utils-helper-i (npm) malicious package — MAL-2026-13918 | O3 Security