internallib_v657

GHSA-w2wx-86qr-g533

Malicious code in internallib_v657 (npm)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.1`

## Source: amazon-inspector (d61ffc921e9432c8176cc16265daf6add48cf90a4f99ec6bbec173e5109673b1)
index.js exports a `command()` function that invokes `/bin/bash -c` to curl a reverse-shell payload from reverse-shell.sh targeted at the hardcoded IP 10.0.73.186:443 and pipes it to sh. Any consumer that requires this package and calls the exported function receives a full interactive remote shell to that address, giving the remote party arbitrary command execution on the installer's host. The package has generic naming, empty metadata, and a cover string, and provides no legitimate functionality alongside the backdoor.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/cf4aebf720e8056d8d57b6578959b6b06703635c/osv/malicious/npm/internallib_v657/MAL-2026-16482.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/cf4aebf720e8056d8d57b6578959b6b06703635c/osv/malicious/npm/internallib_v657/MAL-2026-16482.json
- https://www.npmjs.com/package/internallib_v657/v/1.0.1
- https://github.com/advisories/GHSA-w2wx-86qr-g533

Compromised versions (1)

= 1.0.1

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.