Language: Python
Label: vulnerable
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
    def render(self, record, bound_column, value):  # pylint: disable=arguments-differ
        if value:
            name = bound_column.name
            css_class = getattr(record, f"get_{name}_class")()
            label = getattr(record, f"get_{name}_display")()
            return mark_safe(f'<span class="label label-{css_class}">{label}</span>')
        return self.default