🛡️ MAL-2026-4192 — iv-stubborn

Malicious code in iv-stubborn (npm)

Source: amazon-inspector

On npm install, both preinstall and postinstall lifecycle hooks execute index.js, which collects the installer's hostname, all non-internal network interface IP addresses, current working directory, and a specific environment variable (SECURITY_BUG_BOUNTY_DOCTOLIB_IS_PWN), and POSTs them as JSON over plain HTTP to http://poc.khz.bar/install. The README (# @doctolib-apps/native-personalized-services — Claimed by dphoeniixx) indicates this package was published as a dependency-confusion claim against an internal scope. Regardless of stated bug-bounty intent, any developer or build system that installs iv-stubborn automatically transmits internal-network identifiers to a third-party server without consent. The combination of namespace-confusion targeting plus install-time beaconing of host data over plaintext HTTP is a supply-chain attack pattern.

Source: ghsa-malware

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.