nerfstudio-gsPyPI
Advisory published Updated
nerfstudio-gs is a confirmed malicious PyPI package (MAL-2026-5333) that steals credentials and exfiltrates sensitive data (malicious versions 99.0.0, 99.0.1, 99.0.2…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in nerfstudio-gs (PyPI)
What this malware does
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):
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dependency-confusion
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exfiltration-credentials
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exfiltration-browser-data
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exfiltration-crypto
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exfiltration-env-variables
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files-exfiltration
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exfiltration-ssh-keys
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The package overrides the install command in setup.py to execute malicious code during installation.
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abuses-pth
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for nerfstudio-gs (4 malicious versions).
If you installed it — respond
nerfstudio-gs is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If nerfstudio-gs was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks nerfstudio-gs-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.