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Malicious package

dotenv-embednpm

Advisory published Updated

dotenv-embed is a confirmed malicious npm package (MAL-2026-589) that executes malicious code on install (malicious version 3.3.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dotenv-embed (npm)

MAL-2026-589
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dotenv-embed

What this malware does

The package dotenv-embed 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.

Malicious versions

1 flagged
3.3.5

Indicators of compromise (SHA-256)

eb5a7942b654b4da1fb16e67f19ca82b3b52c4fcce4db85e9d5596571651c6b7
6bbecb8b9bb96fcd71af0764df5106d8163ccb94c21960bf858383ab85d10308
5d8160356f0fe6e4649c5bd9913220aaa687dfbc8bd66e6cd80053bdc7e631b8

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for dotenv-embed (version 3.3.5).

  2. If you installed it — respond

    Remove dotenv-embed 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 dotenv-embed 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. dotenv-embed on npm has been identified as a malicious package (version 3.3.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-g7gf-xv5g-23vjRLMA-2026-01248

References

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks dotenv-embed-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

dotenv-embed (npm) malicious package — MAL-2026-589 | O3 Security