Summary
ptlflow v0.4.2 was classified as CRITICAL RISK with a risk score of 1316. Sigil detected 104 findings across 622 files, covering phases including network exfiltration, obfuscation, code patterns, install hooks. Review the findings below before installing this package.
Package description: PyTorch Lightning Optical Flow
v0.4.2
28 March 2026, 15:52 UTC
by Sigil Bot
Risk Score
1316
Findings
104
Files Scanned
622
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
ptlflow-0.4.2/ptlflow/models/matchflow/QuadtreeAttention/setup.py:30
],
cmdclass={"build_ext": BuildExtension},
)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
ptlflow-0.4.2/ptlflow/models/separableflow/libs/GANet/setup.py:16
],
cmdclass={"build_ext": BuildExtension},
)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
ptlflow-0.4.2/ptlflow/utils/external/alt_cuda_corr/setup.py:13
],
cmdclass={"build_ext": BuildExtension},
)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.
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