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OpenAdvisories
Malicious MAL-2026-12518

break-after

npm package · versions 9999.0.0

Reported Aug 5, 2026 · Updated Aug 5, 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 (80e06e591fd35c119051df59a1ed1771e74146adb37f3aef05367812412af1ad)
The package's preinstall script runs automatically on `npm install` and collects os.hostname(), os.userInfo().username, process.cwd(), the configured npm registry, and a set of CI/repository environment variables, then sends the values as query-string parameters in an HTTP GET to the hardcoded bare-IP endpoint http://75.119.137.232:31337/depconfuse. The version number 9999.0.0 combined with the name of an existing public package and preinstall exfiltration of host, user, working-directory, and internal CI repository identifiers is the fingerprint of a dependency-confusion reconnaissance payload: it is designed to be pulled in by an internal build that resolves the higher version from the public registry, and to report back the identity of the victim organization and its private repository names.