![]() Brute Force Attacks via XML-RPCĮach time xmlrpc.php makes a request, it sends the username and password for authentication. This could overload your server and put your site out of action. If XML-RPC is enabled on your site, a hacker could potentially mount a DDoS attack on your site by exploiting xmlrpc.php to send vast numbers of pingbacks to your site in a short time. The XML-RPC specification was what made this communication possible, but that’s been replaced by the REST API (as we saw already). These are the notifications that appear in the comments on your site when another blog or site links to your content. One of the functions that xmlrpc.php enabled was pingbacks and trackbacks. If you would like it enabled for an application, please contact support. Let’s look at the specific vulnerabilities in more detail. If they are running a version that predates the REST API, they will still need access to xmlrpc.php. If you’re managing your site well, you will know that keeping WordPress up-to-date, as well as any plugins or themes, is essential.īut there will always be website owners who are unwilling or unable to update their version of WordPress. The reason for this is because one of the key features of WordPress will always be backward compatibility. If xmlrpc.php is a security liability and it no longer does a job, why hasn’t it been removed from WordPress altogether? That’s why it’s wise to make your site more secure by disabling it. Now that XML-RPC is no longer needed to communicate outside WordPress, there’s no reason to keep it active. The main reason why you should disable xmlrpc.php on your WordPress site is because it introduces security vulnerabilities and can be the target of attacks. Also, there is much more flexibility.īecause the REST API has superseded XML-RPC, you should now disable xmlrpc.php on your site. The range of systems the REST API can interact with is much greater than the one allowed by xmlrpc.php. Instead, the REST API is used to communicate with the WordPress mobile app, with desktop clients, with other blogging platforms, with (for the Jetpack plugin) and with other systems and services. This was because the app wasn’t running WordPress itself instead, it was a separate app communicating with your WordPress site using xmlrpc.php.īut it wasn’t just the mobile app that XML-RPC was used for: it was also used to allow communication between WordPress and other blogging platforms, it enabled trackbacks and pingbacks, and it powered the Jetpack plugin which links a self-hosted WordPress site to .īut since the REST API was integrated into WordPress core, the xmlrpc.php file is no longer used for this communication. If you used the WordPress mobile app before version 3.5, you may recall having to enable XML-RPC on your site for the app to be able to post content. ![]() The main reason for this was to allow the WordPress mobile app to talk to your WordPress installation. But since version 3.5, it’s been enabled by default. In early versions of WordPress, XML-RPC was turned off by default. See how Kinsta stacks up against the competition.
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