MAL-2026-4573

    Dashboard / Malicious Package / MAL-2026-4573

    MAL-2026-4573

    Published: 21 May 2026Last Modified: 26 May 2026

    Summary: Malicious code in git-userhub (npm)

    Details: Source: amazon-inspector (859f77ac10aa89722823e0477f8f6986db2b54dd25b1b2aedb05ee31d5891071) Package name 'git-userhub' is a lookalike of a GitHub-related identity, with no legitimate publisher backing. The package.json declares a postinstall hook ("postinstall": "node install.js") that runs install.js on every npm install. install.js requires child_process and performs multiple https.get calls together with hostname/identity reads — the canonical install-time fetch-and-exec shape. There is no shipped native source tree, no publisher-matching CDN, and no version-pinned binary that would justify a postinstall network fetch. Combined with the lookalike package name (git-<project> typosquat shape used by recent supply-chain droppers), the structure matches a postinstall dropper that spawns child processes against fetched content on the installer's machine. Installing this package risks remote code execution and host/identity exfiltration on the installer's system or CI runner.

    References: https://www.npmjs.com/package/git-userhub/v/2.1.5, https://www.npmjs.com/package/git-userhub/v/2.1.4

    Affected packages

    Package

    Name: git-userhub

    Purl: pkg:npm/git-userhub

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    2.1.4
    2.1.5
    MAL-2026-4573 | CVE-DB