registry / npx-test-ma980 / 1.0.1

npx-test-ma980@1.0.1

OSV Malicious Advisory

imported 19d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-16310 confirms this npm version as malicious. 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...

Advisory

MAL-2026-16310

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in npx-test-ma980 (npm)

Details

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.

Decision reason

OpenSSF Malicious Packages via OSV confirms npx-test-ma980@1.0.1 as malicious (MAL-2026-16310): Malicious code in npx-test-ma980 (npm)

References

OSV advisory PACKAGE

Source & flagged code

0 flagged

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Source & flagged code

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Findings

1 High

HighOsv Malicious Advisory

Affected versions and remediation

This report applies to npx-test-ma980@1.0.1.

See version security history for other recorded verdicts.

Avoid installing npx-test-ma980@1.0.1. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-09-21 03:30:16.559Z (UTC).

Source advisory published: 2026-09-21 03:21:25.000Z (UTC).

This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.