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Malicious package

kirklandnpm

Advisory published Updated

kirkland is a confirmed malicious npm package (MAL-2026-10331) that executes malicious code on install (malicious version 1.1.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in kirkland (npm)

MAL-2026-10331
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall kirkland

What this malware does

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

1 flagged
1.1.2

Indicators of compromise (SHA-256)

4fbd3da78615dc607bb287e809874ccce081e816a5eeb1120421118da70bcba5
d63227409d50f6692f439affe3fa27016710894dd8c9882559b0424f26a2e5e8
2262ab0c908e59abf21c020e17ee128b0456636c50be5704d08508a7890092a3

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for kirkland (version 1.1.2).

  2. If you installed it — respond

    Remove kirkland 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 kirkland 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. kirkland on npm has been identified as a malicious package (version 1.1.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-7m92-3w8w-hxrpRLMA-2026-05565RLUA-2026-06295

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks kirkland-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

kirkland (npm) malicious package — MAL-2026-10331 | O3 Security