joule-sbx-poc

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (c460336aaf7e02cc7b37e4a0e58df5e22431f9de9ea852af21bb1aa2f333039c)
During installation, the code exfiltrates basic information and exfiltrates more information to a localhost service as well as starts a reverse shell there. It seems to be an internal test that was uploaded to a public repository.


---

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: 2026-08-joule-btp-extension


Reasons (based on the campaign):


 - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.


 - 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/f94d3c298d2a9658982a99894c2f440906257d14/osv/malicious/pypi/joule-sbx-poc/MAL-2026-13756.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/joule-sbx-poc
- https://github.com/ossf/malicious-packages/blob/f94d3c298d2a9658982a99894c2f440906257d14/osv/malicious/pypi/joule-sbx-poc/MAL-2026-13756.json
- https://github.com/advisories/GHSA-w944-rwh6-xhj2

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.