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Malicious package

spire.officejs-externsnpm

Advisory published Updated

spire.officejs-externs is a confirmed malicious npm package (MAL-2026-312) that executes malicious code on install. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in spire.officejs-externs (npm)

MAL-2026-312
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall spire.officejs-externs

What this malware does

The package spire.officejs-externs was found to contain malicious code.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

9dfb46e06f3d17c765d605a42471cb4f6b75133ef12587b0dd769276a77fddcc

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for spire.officejs-externs (all published versions).

  2. If you installed it — respond

    Remove spire.officejs-externs 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 spire.officejs-externs 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. spire.officejs-externs on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks spire.officejs-externs-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

spire.officejs-externs (npm) malicious package — MAL-2026-312 | O3 Security