MAL-2026-16310

    Dashboard / Malicious Package / MAL-2026-16310

    MAL-2026-16310

    Published: 21 Sept 2026Last Modified: 21 Sept 2026

    Summary: Malicious code in npx-test-ma980 (npm)

    Details: Source: amazon-inspector (adfd1e5f7cc282648da56cdf50ac9c3cb27d6165fa4a3f8f3625b4a0c2694be6) package.json declares a `bin` entry whose key contains shell metacharacters and a chained command: `"tool & calc.exe": "./run.js"`. On Windows, npm's bin shim/symlink generation and later invocation via `npm install -g` or `npx` can interpret the `&` in the bin key as a command separator, causing `calc.exe` to execute as an unintended side effect of installing or linking the package. The shipped `run.js` is a trivial `console.log("hello")` and `payload.json` is empty, so the crafted bin key is the entire attack surface — a proof-of-concept exploit of npm bin-name handling that yields arbitrary command execution on the installer's host.

    References: https://www.npmjs.com/package/npx-test-ma980/v/1.0.1

    Affected packages

    Package

    Name: npx-test-ma980

    Purl: pkg:npm/npx-test-ma980

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.1