tsesyx

GHSA-2hp3-h88j-crrm

Malicious code in tsesyx (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 10.0.5`

## Source: kam193 (7c8ea2b8c69693d4bd40c7c4b952878565e3bfaa6eb0ea02ab6ef9ca18eadea8)
When imported, the package attempts to exfiltrate environment variables and basic user info


---

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


Campaign: 2025-07-triple-equals


Reasons (based on the campaign):


 - exfiltration-env-variables


 - 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/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/tsesyx/MAL-2025-41790.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/tsesyx
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/tsesyx/MAL-2025-41790.json
- https://github.com/advisories/GHSA-2hp3-h88j-crrm

Compromised versions (1)

= 10.0.5

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