pyenvprep

GHSA-cwrf-g828-fp4h

Malicious code in pyenvprep (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: kam193 (963727b60e7fa8536050eb0f4691dc8bec6089567630063305d05ddceb4834cd)
Package contains code to silently execute a RAT-like agent, allowing the attacker to access the file system and execute arbitrary code.


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


Campaign: 2026-05-venv-utils


Reasons (based on the campaign):


 - rat


 - typosquatting


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.


 - obfuscation

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/pyenvprep/MAL-2026-3829.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/pyenvprep
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/pyenvprep/MAL-2026-3829.json
- https://github.com/advisories/GHSA-cwrf-g828-fp4h

Compromised versions (1)

= 1.0.0

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