GCVE-110-OSM-2026-14008

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. ENTRY src/workalender/__main__.py (console-script: workalender=workalender.__main__:main) DESTINATION - 3 exfil (custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in hatch_build.py: "webhook.site" - Python File Upload to Remote in hatch_build.py: "urllib.request.Request( webhook_url, data=" - Data Encoding for Exfiltration in hatch_build.py: "json.dumps(result).encode" - Network Request in hatch_build.py: "urllib.request.Request(" ADDITIONAL FINDINGS - Shell Command Execution in hatch_build.py: "subprocess.Popen(" - Silent Process Execution in hatch_build.py: "stdout=subprocess.DEVNULL" PAYLOAD FILES hatch_build.py