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Malicious package

open-item-validatornpm

Advisory published Updated

open-item-validator is a confirmed malicious npm package (MAL-2026-16052) that executes malicious code on install (malicious versions 1.0.0, 1.0.1, 1.0.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in open-item-validator (npm)

MAL-2026-16052
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall open-item-validator

What this malware does

On require(), index.js spawns a detached, unref'd background Node process (lib/check-items.js) that repeatedly HTTP-GETs a JSON payload from http://itemx.servegame.com:8888/api/x-realtime and executes the returned JavaScript via new Function('require','module', payload.code)(require, moduleObj). The daemon survives the parent process and re-polls the endpoint on a configured interval, so whoever controls that endpoint runs arbitrary Node code on the installer's host on library load and continuously thereafter. The fetch is over plain HTTP to a No-IP dynamic-DNS host (servegame.com) that does not match the publisher's declared homepage (game.spawnrealm.com); a bundled RSA signature check does not alter that the endpoint operator chooses what code runs. README framing as 'signed game code updates' is inconsistent with the shipped generic fetch-and-exec mechanism and the publisher/destination host mismatch.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

6 flagged
1.0.01.0.11.0.21.0.31.0.41.0.5

Indicators of compromise (SHA-256)

7ba5b55d57f4938bf2494d369d14434bb80ba6f6c712c7f8d89ae773c27dc457
ee1ac3d27c505e6a6e95a5544939630fdb29b701cbe41f095d7431cd4a2c83aa
5969fb446f5d7799038ef9ba9fe8affe2a52fa4a4ead78972468dfbee8e5fb37
644e4428fb51fc8b74e205a3115a7765fe004741a307179b71c91060b1bdbe2f
6dd0888ad306ae546ce2b0d6a482de9139a165174d14ff4afeee199b87b77c5d
fa5f923c619fb110019899ac88d32bfe2bd195fbffdcde853b618ae5be3f360e
5734c86f1289f980635bd730b9fe0a87dc2def30694a0beedf1fb84ab7303b66

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for open-item-validator (6 malicious versions).

  2. If you installed it — respond

    Remove open-item-validator 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.

  3. Did it already run?

    If open-item-validator 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. open-item-validator on npm has been identified as a malicious package (versions 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019720IN-MAL-2026-019719IN-MAL-2026-019851IN-MAL-2026-019853IN-MAL-2026-019854IN-MAL-2026-019852GHSA-55qh-42r8-hcgq

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks open-item-validator-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.

Explore

open-item-validator (npm) malicious package — MAL-2026-16052 | O3 Security