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subprocess-without-shell-equals-true (S603)#

Derived from the flake8-bandit linter.

What it does#

Check for method calls that initiate a subprocess without a shell.

Why is this bad?#

Starting a subprocess without a shell can prevent attackers from executing arbitrary shell commands; however, it is still error-prone. Consider validating the input.

Known problems#

Prone to false positives as it is difficult to determine whether the passed arguments have been validated (#4045).


import subprocess

cmd = input("Enter a command: ").split()