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Malicious package

access-worker-testnpm

Advisory published Updated

access-worker-test is a confirmed malicious npm package (MAL-2026-2721) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in access-worker-test (npm)

MAL-2026-2721
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall access-worker-test

What this malware does

The package access-worker-test was found to contain malicious code.

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d8ce16bfec048001e855888487ad2e6e4304b85fed5db7bcfa5be47436193d9a
90ffaa308018be94514f70476e1756144af41a3f03028aa640c8ab24c7edfcc0

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for access-worker-test (version 0.0.1).

  2. If you installed it — respond

    Remove access-worker-test 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 access-worker-test 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. access-worker-test on npm has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01875

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks access-worker-test-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

access-worker-test (npm) malicious package — MAL-2026-2721 | O3 Security