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Malicious package

notifier-utilsnpm

Advisory published Updated

notifier-utils is a confirmed malicious npm package (MAL-2026-6923) that typosquats a legitimate package to trick installs (malicious versions 1.3.7, 1.3.8, 1.3.9…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in notifier-utils (npm)

MAL-2026-6923
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall notifier-utils

What this malware does

The package presents itself as a pino-compatible logger (README, keywords, and a module.exports.pino alias mirror the pino identity, and lib/ replicates pino's file layout including proto.js, levels.js, transport.js, worker.js). Its actual behavior is remote code execution: index.js's exported middleware spawns node lib/caller.js with detached: true, stdio: 'ignore', and child.unref(), hiding the child from the calling application. lib/caller.js issues an HTTPS GET to an IPFS gateway URL (emerald-accurate-urial-9.mypinata.cloud/ipfs/bafkreih3kofw4s22pcrwpi35nk57xy3r345nhsfxeuishcvljrsim3c3hq), reads the .data.model field, and executes the returned JavaScript via new Function.constructor('require', src) with require passed in — giving the fetched code full Node privileges (filesystem, network, child_process, arbitrary module loading). The IPFS-hosted payload is attacker-mutable, so the executed code can change at any time without a package update. The pino impersonation exists to induce developers to wire the exported middleware into their applications, at which point every request path that reaches the middleware triggers the remote-fetch-and-eval.

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

4 flagged
1.3.71.3.81.3.91.4.0

Indicators of compromise (SHA-256)

380fd81aec6bb1bcbeb2b21bb7b91bfb8e4ca4e184d07885faa094da6b42c952
ba547b66886d76bff74f9c797b08f614eb5eb799359a28d0cdeb35dd1a0458ff
3ea8e3ced7e3ebb2a3952458971f66412ef904a376c4c6005dde9da5b084edb9
eb35a197222f6c137adb7408eea31f1f517b4c0e4939f2c7fbbb429597696634
6a5846e3c26fdded8225d54ec017b01be255353470c39a780bbd9b556c059120

Detection & response playbook

Typosquat
  1. Find it

    Search your lockfiles and build artifacts for notifier-utils (4 malicious versions).

  2. If you installed it — respond

    notifier-utils is a typosquat — you almost certainly intended a legitimately-named package. Remove notifier-utils, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If notifier-utils 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. notifier-utils on npm has been identified as a malicious package (versions 1.3.7, 1.3.8, 1.3.9, 1.4.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-vg5w-f83q-fhmjIN-MAL-2026-008592IN-MAL-2026-009266IN-MAL-2026-009270IN-MAL-2026-009335

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks notifier-utils-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

notifier-utils (npm) malicious package — MAL-2026-6923 | O3 Security