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OpenAdvisories
Malicious MAL-2026-18376

black-spindle-2

npm package · versions 301.0.0, 100.0.0

Reported Oct 29, 2026 · Updated Oct 29, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: amazon-inspector (433228fbed18f3104fed4cd1bce59bc5a76b8ea061d18c8fc9516c92b6b26e90)
package.json declares a postinstall script that runs curl against the ephemeral host http://778e-181-63-25-28.ngrok-free.app over plain HTTP, embedding a shell command-substitution expression in the URL path. The script fires automatically on npm install, confirming installation on the installer's machine and providing a channel to exfiltrate host or environment values via the expanded shell expression. The shipped index.js is an empty stub, so the manifest's postinstall beacon is the package's entire effect. The destination is an anonymous ngrok-free.app tunnel with no relationship to any legitimate publisher, consistent with a dependency-confusion or install-confirmation probe.