Summary
mcp-coder v0.1.12 was classified as CRITICAL RISK with a risk score of 829. Sigil detected 59 findings across 639 files, covering phases including provenance, network exfiltration, install hooks, code patterns, obfuscation. Review the findings below before installing this package.
v0.1.12
10 April 2026, 06:15 UTC
by Sigil Bot
Risk Score
829
Findings
59
Files Scanned
639
Provenance
Findings by Phase
Phase Ordering
Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.
install-setup-py-cmdclass
CRITICALsetup.py overrides cmdclass — may execute code during install
mcp_coder-0.1.12/setup.py:36
setup(cmdclass={"build_py": BuildPyWithSkills})Why was this flagged?
This package overrides Python's setup.py cmdclass, which allows arbitrary code to execute during pip install. This is the primary attack vector for malicious PyPI packages — attackers use it to steal credentials, install backdoors, or download additional payloads before the developer ever runs the code. Rated CRITICAL because it executes automatically with no user interaction required.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
mcp_coder-0.1.12/tests/utils/test_subprocess_runner.py:298
def test_stream_subprocess_env_setup(self) -> None:
"""Python commands get isolation env variables."""Why was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
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