MAL-2026-5333 Malicious code in nerfstudio-gs (PyPI)

No suspicious behaviors were observed in this package version. No install-time network activity, no credential or environment scraping, no obfuscated payloads, and no lifecycle hooks executing remote content were identified.

During installation or Python setup (via PTH file), the code exfiltrated all kinds of sensitive data, including env variables, browser's data, SSH keys, data from cryptocurrency extensions, shell history files, etc.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-06-nerfstudio-gs

Reasons (based on the campaign):

• dependency-confusion

• exfiltration-credentials

• exfiltration-browser-data

• exfiltration-crypto

• exfiltration-env-variables

• files-exfiltration

• exfiltration-ssh-keys

• The package overrides the install command in setup.py to execute malicious code during installation.

• abuses-pth