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MU-plugin that completely disables WordPress XML-RPC at the PHP level. Belt-and-suspenders alongside .htaccess blocking. Also removes pingback headers and self-pingbacks. Do not use if you run Jetpack.
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| name | xmlrpc-kill |
| description | MU-plugin that completely disables WordPress XML-RPC at the PHP level. Belt-and-suspenders alongside .htaccess blocking. Also removes pingback headers and self-pingbacks. Do not use if you run Jetpack. |
| triggers | ["disable xmlrpc","xmlrpc attack","pingback attack","xmlrpc brute force","disable pingbacks"] |
Disables WordPress XML-RPC completely — the xmlrpc_enabled filter, the
xmlrpc_call action hook, pingback headers, and self-pingback functionality.
cp scripts/hardening/mu-plugins/xmlrpc-kill.php \
/path/to/wp-content/mu-plugins/
No configuration required — deploys and works immediately.
system.multicall)Jetpack requires XML-RPC. If you run Jetpack, do not deploy this plugin.
Instead, use wp-firewall.py to restrict xmlrpc.php to Automattic's IP ranges:
python scripts/hardening/wp-firewall.py \
--config config/config.yaml \
--allow-xmlrpc-ip "192.0.64.0/18,192.0.80.0/20"
Other services that use XML-RPC:
| Feature | How |
|---|---|
| XML-RPC API | xmlrpc_enabled filter → false |
| Any XML-RPC call | xmlrpc_call action → wp_die(403) |
RSD link in <head> | rsd_link removed |
WLW manifest in <head> | wlwmanifest_link removed |
X-Pingback header | wp_headers filter |
| Self-pingbacks | pre_ping hook |
curl -s -o /dev/null -w "%{http_code}" \
-X POST https://yoursite.com/xmlrpc.php \
-d '<?xml version="1.0"?><methodCall><methodName>system.listMethods</methodName></methodCall>'
# Should return 403