sqlmapproject/sqlmap · error · InterfaceError

malformed server response: %s

Error message

malformed server response: %s

What it means

Error "malformed server response: %s" thrown in sqlmapproject/sqlmap.

Source

Thrown at extra/dbwire/mysql.py:200

    def rollback(self):
        pass

    def close(self):
        try:
            _send_packet(self._sock, 0, b"\x01")  # COM_QUIT
        except Exception:
            pass
        try:
            self._sock.close()
        except Exception:
            pass

    def _query(self, query):
        _send_packet(self._sock, 0, b"\x03" + query.encode("utf-8"))  # COM_QUERY
        try:
            return self._read_query_response()
        except (struct.error, IndexError, ValueError) as ex:
            raise InterfaceError("malformed server response: %s" % ex)

    def _read_query_response(self):
        seq, payload = _read_packet(self._sock)
        first = _u8(payload, 0)

        if first == 0xff:  # ERR
            raise ProgrammingError("(remote) %s" % _err_message(payload))
        if first == 0x00 or (first == 0xfe and len(payload) < 9):  # OK packet (no result set)
            affected, _ = _lenc_int(payload, 1)
            return None, [], (affected if affected is not None else -1)
        if first == 0xfb:  # LOCAL INFILE request
            raise NotSupportedError("LOCAL INFILE is not supported")

        column_count, _ = _lenc_int(payload, 0)
        description, binary = [], []
        for _ in range(column_count):
            _, cpay = _read_packet(self._sock)
            off = 0

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at extra/dbwire/mysql.py:200 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/4e2d36335068daea. Report an issue: GitHub.