Which versions of buffer-utilities are malicious?

The following npm versions of buffer-utilities are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate buffer-utilities if I installed it?

Remove buffer-utilities 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 network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is buffer-utilities part of a known attack campaign?

Yes — buffer-utilities is associated with the GHSA-67mv-3xg7-3726 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect buffer-utilities in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking buffer-utilities and packages like it before any post-install script runs.

Malicious package

buffer-utilitiesnpm

Malicious code in buffer-utilities (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5087

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall buffer-utilities

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.

The OpenSSF Package Analysis project identified 'buffer-utilities' @ 1.0.0 (npm) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.
The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

9d5f9cc02aafc6aacd829af1fe7b8adb4b215f176b9a412ee46ee28372b7805d

ac9818418306f2a7e74562ae1c11bead29dcbcdb119e98734fdf8b3ac7a67d03

Frequently asked questions

No. buffer-utilities on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-67mv-3xg7-3726

References

github.com

Credits

OpenSSF: Package Analysis · finder

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection