PHP Fatal: Cannot use object of type WP_Error as array

Hi,

A manual “Run All” scan loads forever, is never completed and I am getting a PHP fatal. It seems to crash on the new XML-RPC security check? I am on plugin version 1.13.

P.s. my error log seems to include a duplicate stack trace. I included both of ‘m to be sure:

Fatal error: Uncaught Error: Cannot use object of type WP_Error as array in /wp-content/plugins/wpscan/security-checks/xmlrpc-enabled/check.php:74

Stack trace:

#0 /wp-content/plugins/wpscan/app/Plugin.php(501): WPScan\Checks\xmlrpcEnabled->perform()
#1 /wp-content/plugins/wpscan/app/Plugin.php(457): WPScan\Plugin->verify()
#2 /wp-content/plugins/wpscan/app/Summary.php(142): WPScan\Plugin->check_now()
#3 /wp-includes/class-wp-hook.php(287): WPScan\Summary->ajax_check_now('')
#4 /wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#5 /wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#6 /wp-admin/admin-ajax.php(176): do_action('wp_ajax_wpscan_...')
#7 {main}
  thr in /wp-content/plugins/wpscan/security-checks/xmlrpc-enabled/check.php on line 74

Stack Trace

1. {anonymous}()
   /wp-content/plugins/wpscan/security-checks/xmlrpc-enabled/check.php:74
2. WPScan\Checks\xmlrpcEnabled->perform()
   /wp-content/plugins/wpscan/app/Plugin.php:501
3. WPScan\Plugin->verify()
   /wp-content/plugins/wpscan/app/Plugin.php:457
4. WPScan\Plugin->check_now()
   /wp-content/plugins/wpscan/app/Summary.php:142
5. WPScan\Summary->ajax_check_now('')
   /wp-includes/class-wp-hook.php:287
6. WP_Hook->apply_filters('', Array(1))
   /wp-includes/class-wp-hook.php:311
7. WP_Hook->do_action(Array(1))
   /wp-includes/plugin.php:478
8. do_action('wp_ajax_wpscan_check_now')
   /wp-admin/admin-ajax.php:176

Context

URL            : /wp-admin/admin-ajax.php?_fs_blog_admin=true
Referer        : https://myawesomesite.com/wp-admin/admin.php?page=wpscan
HTTP Method    : POST
HTTP Status    : 200
ajaxAction     : wpscan_check_now
isSSL          : Yes
Current Filter : wp_ajax_wpscan_check_now
Execution Time : 9.266 s
Memory Usage   : 28.06 MiB
PHP SAPI       : fpm-fcgi