MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6

6.1.6 Security Issues with LOAD DATA LOCAL

The LOAD DATA statement can load a file located on the server host, or, if the LOCAL keyword is specified, on the client host.

There are two potential security issues with the LOCAL version of LOAD DATA:

To avoid LOAD DATA issues, clients should avoid using LOCAL. To avoid connecting to untrusted servers, clients can establish a secure connection and verify the server identity by connecting using the --ssl-mode=VERIFY_IDENTITY option and the appropriate CA certificate.

To enable adminstrators and applications to manage the local data loading capability, LOCAL configuration works like this:

If LOCAL capability is disabled, on either the server or client side, a client that attempts to issue a LOAD DATA LOCAL statement receives the following error message:

ERROR 1148: The used command is not allowed with this MySQL version