pymaas

GHSA-9hv8-x7fp-26vw

Malicious code in pymaas (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 99.99.0`

## Source: kam193 (81e7303aa1cc62cb0fd1e4e6bc28ce118568e8eb5fb56d2a44818bacedf5ebdb)
During import, the package exfiltrates environment variables.


---

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


Campaign: 2026-09-amirgo4496


Reasons (based on the campaign):


 - exfiltration-env-variables


 - dependency-confusion


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

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/de3a859ea74ab1a4701902937140ae4f496c6a28/osv/malicious/pypi/pymaas/MAL-2026-15929.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/pymaas
- https://github.com/ossf/malicious-packages/blob/de3a859ea74ab1a4701902937140ae4f496c6a28/osv/malicious/pypi/pymaas/MAL-2026-15929.json
- https://github.com/ossf/malicious-packages/blob/3f9dbdc1b52f398d6477929cc635c36b6a8ff583/osv/malicious/pypi/pymaas/MAL-2026-15929.json
- https://pypi.org/project/pymaas/99.99.0
- https://github.com/advisories/GHSA-9hv8-x7fp-26vw

Compromised versions (1)

= 99.99.0

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