nspack

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (7741f090145e1e4bbd7998edba9c8151bd5dd3380adaa430e8f05cb2c814396f)
These packages are used as build dependencies of malicious packages in newer waves of the campaign 2026-02-urllib-slim. They are used to split the malicious action between dependencies and are not malicious alone, but are used together to: exfiltrate information through DNS, collect information about the processes and covering tracks by installing packages from local private repositories.

Package nspack additionally notifies upon importing a domain known for malicious activity with the package and hostname.


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


Campaign: 2026-03-geekennedy


Reasons (based on the campaign):


 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.


 - The malicious code is intentionally included in a dependency of the package

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/nspack/MAL-2026-2115.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/nspack
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/nspack/MAL-2026-2115.json
- https://github.com/advisories/GHSA-3gmf-fmw5-rr9g

Compromised versions (1)

• = 0.1.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.