MAL-2026-6407 Malicious code in @su-doughnym/hubspot-loginui-poc (npm)

Package is openly labeled a dependency-confusion proof-of-concept and uses a high version number (99.99.99) consistent with that intent. The preinstall and postinstall scripts collect host metadata (os.hostname, os.platform, username, cwd, pid, timestamp) and write it to a local file (.resolution-proof.json) inside the package's own directory. No network I/O, no eval, no remote fetch, no reads of installer secrets (~/.npmrc, ~/.aws/, ~/.ssh/), and no writes outside the package directory occur. As shipped, the package is not installer-harmful — nothing leaves the machine — but the high-version dependency-confusion shape is exactly what a malicious actor would use to shadow a private @su-doughnym/* package in an internal install. Routing to human review so a maintainer can confirm this is a legitimate internal PoC and decide whether the published artifact should remain on the public registry.

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.