GCVE-110-OSM-2026-11420

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. Judge assessment: This is a dependency-confusion style install-time implant: the attacker model is a publisher shipping a PyPI package that runs during install and sends host fingerprints to an out-of-band endpoint. The evidence is explicit in `setup.py`, where `cmdclass` overrides `install`, `develop`, and `egg_info`, and `execute_payload()` collects `socket.gethostname()`, `getpass.getuser()`, `platform.system()`, `platform.machine()`, and posts them via `urllib.request.urlopen()` to `https://sxousyampfntoxuxfptkij9cbmpw1kpes.oast.fun`. The OAST URL is a first-class exfil IOC, not a benign telemetry service, and the package’s own comment `Dependency confusion PoC` does not neutralize the behavior because the code still executes on install. The OSV advisory is corroborated by the actual file contents rather than merely repeating it. ENTRY setup.py (install-hook: install/develop/build override present) - setup.py Code Execution in setup.py DESTINATION - 2 exfil (oast, custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in setup.py: ".oast.fun" - Network Request in setup.py: "urllib.request.urlopen(" - System Information Collection in setup.py: "socket.gethostname()" - Suspicious Domain in setup.py: "oast.fun" ADDITIONAL FINDINGS - Setup.py Command Override in setup.py: "cmdclass={ "install": PoCInstall, "develop": PoCDevelop, "egg_info"" PAYLOAD FILES setup.py