hardcoded-bind-all-interfaces (S104)

Derived from the flake8-bandit linter.

What it does

Checks for hardcoded bindings to all network interfaces (0.0.0.0).

Why is this bad?

Binding to all network interfaces is insecure as it allows access from unintended interfaces, which may be poorly secured or unauthorized.

Instead, bind to specific interfaces.

Example

ALLOWED_HOSTS = ["0.0.0.0"]

Use instead:

ALLOWED_HOSTS = ["127.0.0.1", "localhost"]

References

• Common Weakness Enumeration: CWE-200