suspicious-telnetlib-import (S401)

Derived from the flake8-bandit linter.

This rule is unstable and in preview. The --preview flag is required for use.

What it does

Checks for imports of the telnetlib module.

Why is this bad?

Telnet is considered insecure. It is deprecated since version 3.11, and was removed in version 3.13. Instead, use SSH or another encrypted protocol.

Example

import telnetlib

References

• Python documentation: telnetlib - Telnet client
• PEP 594: telnetlib