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Malicious package

librastandardlibnpm

Advisory published Updated

librastandardlib is a confirmed malicious npm package (MAL-2026-15538) that executes malicious code on install (malicious version 45.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in librastandardlib (npm)

MAL-2026-15538
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall librastandardlib

What this malware does

package.json at line 11 declares a dependency whose key equals the package's own name (librastandardlib) and whose value is an off-registry HTTPS URL (https://repo.securityctrl.com/librastandardlib) instead of a registry version range. On npm install, npm fetches whatever bytes that URL returns and installs them as the resolved dependency, running any lifecycle scripts inside with no version pin and no integrity check. The implausibly high version (45.0.0) and the self-referential dependency name are consistent with a dependency-confusion shape designed to win resolution against an internal package. The shipped index.js is an inert stub, so the manifest URL is the entire delivery mechanism — whoever controls repo.securityctrl.com controls code executed on the installer's machine at install time.

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
45.0.0

Indicators of compromise (SHA-256)

519c28eb8d9df0a16d93e1b1c486f1ad4a9092a9bf958aed56f273cfe1fcfc14
a245023903eeddb0722885c766c17cb9366986dddf69f60d5eb4b54166c17333

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for librastandardlib (version 45.0.0).

  2. If you installed it — respond

    Remove librastandardlib 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 librastandardlib 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. librastandardlib on npm has been identified as a malicious package (version 45.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019095GHSA-p943-f2p4-7xfx

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks librastandardlib-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

librastandardlib (npm) malicious package — MAL-2026-15538 | O3 Security