peptest2

GHSA-r9mv-hwjj-qr8q

Malicious code in peptest2 (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.2.3`

## Source: kam193 (60249233a6c88847f2043da362196e4b2652bd7dddb8dbfe92cc3e7b2b2676a9)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


---

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.


Campaign: GENERIC-standard-pypi-install-pentest


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

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/peptest2/MAL-2025-191813.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/peptest2
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/peptest2/MAL-2025-191813.json
- https://github.com/advisories/GHSA-r9mv-hwjj-qr8q

Compromised versions (1)

= 1.2.3

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