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Malicious package

@hemihatchlings/sharednpm

Advisory published Updated

@hemihatchlings/shared is a confirmed malicious npm package (MAL-2025-49396) that executes malicious code on install (malicious version 3.0.10). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @hemihatchlings/shared (npm)

MAL-2025-49396
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @hemihatchlings/shared

What this malware does

The package @hemihatchlings/shared was found to contain malicious code.

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.

The OpenSSF Package Analysis project identified '@hemihatchlings/shared' @ 3.0.10 (npm) as malicious.

It is considered malicious because:

  • The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged
3.0.10

Indicators of compromise (SHA-256)

d39f182c40105e1ad96a4a67539af93228c549568c5855bf2abb4c801536f1d2
454d2f2ceff98f9aa0cb7b9fc99f02311879d217e47ee82770b60e7d85368b6f
811b5e5ed799c3b9b7c55be230fcc2d744280bf822f2f37965918e826a1f6fbf

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for @hemihatchlings/shared (version 3.0.10).

  2. If you installed it — respond

    Remove @hemihatchlings/shared 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 @hemihatchlings/shared 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. @hemihatchlings/shared on npm has been identified as a malicious package (version 3.0.10 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-qg38-4f8f-qc92

References

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks @hemihatchlings/shared-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

@hemihatchlings/shared (npm) malicious package — MAL-2025-49396 | O3 Security