safe-local-variable-values

safe-local-variable-values is a variable defined in `files.el'.
Its value is

nil

• This variable is ignored as a file-local variable.
• This variable may be risky if used as a file-local variable.

Documentation:
List variable-value pairs that are considered safe.
Each element is a cons cell (VAR . VAL), where VAR is a variable
symbol and VAL is a value that is considered safe.

You can customize this variable.