Summary
clang-build-ext v0.0.4.dev20260320015434 was classified as CRITICAL RISK with a risk score of 365. Sigil detected 8 findings across 14 files, covering phases including install hooks, code patterns. Review the findings below before installing this package.
Package description: Clang-based extension builder
v0.0.4.dev20260320015434
20 March 2026, 03:14 UTC
by Sigil Bot
Risk Score
365
Findings
8
Files Scanned
14
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
clang_build_ext-0.0.4.dev20260320015434/PKG-INFO:76
ext_modules=[Extension("myext", ["src/*.c"])],
cmdclass={
"build_ext": ClangBuildExt,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-setup-py-cmdclass
CRITICALsetup.py overrides cmdclass — may execute code during install
clang_build_ext-0.0.4.dev20260320015434/PKG-INFO:112
],
cmdclass={
"build_ext": ClangBuildExt,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-setup-py-cmdclass
CRITICALsetup.py overrides cmdclass — may execute code during install
clang_build_ext-0.0.4.dev20260320015434/clang_build_ext.egg-info/PKG-INFO:76
ext_modules=[Extension("myext", ["src/*.c"])],
cmdclass={
"build_ext": ClangBuildExt,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-setup-py-cmdclass
CRITICALsetup.py overrides cmdclass — may execute code during install
clang_build_ext-0.0.4.dev20260320015434/clang_build_ext.egg-info/PKG-INFO:112
],
cmdclass={
"build_ext": ClangBuildExt,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-setup-py-cmdclass
CRITICALsetup.py overrides cmdclass — may execute code during install
clang_build_ext-0.0.4.dev20260320015434/setup.py:26
description = 'Clang-based extension builder',
long_description = '# Clang Build Extension\n\n[](https://gitter.im/karellen/Lobby)\n[](https://github.com/karellen/clang-build-ext/actions/workflows/build.yml)\n[](https://gitter.im/karellen/Lobby)\n[](https://github.com/karellen/clang-build-ext/actions/workflows/build.yml)\n[](https://sigilsec.ai/scans/1FAC6B72-38D3-4ED9-911C-821CE2CA6CDF)HTML
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