Language: Python
Label: vulnerable
CWE: CWE-400 \u2014 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Code:
    def get_file_hash(self):
        if self.file_hash == "":
            with self.open_file() as f:
                self._set_file_hash(f.read())

            self.save(update_fields=["file_hash"])

        return self.file_hash