[Fix custom rules / Avoid cheap webhosting] Custom server's mod_security rules are triggered when doing repeated forms saves with many fields

[Sat Mar 16 01:15:28 2019] [error] [client XXX.XX.XXX.XXX] ModSecurity: Access denied with code 200, [Rule: 'ARGS|ARGS_NAMES|REQUEST_COOKIES|REQUEST_COOKIES_NAMES|XML:/*|!ARGS:/body/|!ARGS:/content/|!ARGS:/description/|!ARGS:/message/|!ARGS:optionsQuery|!ARGS:Post|!ARGS:desc|!ARGS:text|!REQUEST_COOKIES:/__utm/|!REQUEST_COOKIES:/_pk_ref/' '<\?(?!xml\s)'] [id "77211220"] [rev "3"] [msg "IM360 WAF: PHP Injection Attack||MVN:<?php $f = & $item->fields; if ( !isset($f['fieldname01']) ) return array('fieldname01 field not found'); $vals = array(); foreach($f['fieldname01']->postdata as $i => $v) { $vals[$i] = 'auto : ' . $v; } return $vals;||MV:<?php $f = & $item->fields; if ( !isset($f['fieldname01']) ) return array('fieldname01 field not found'); $vals = array(); foreach($f['fieldname01']->postdata as $i => $v) { $vals[$i] = 'auto : ' . $v; } return $vals;||T:LITESPEED||PC:1341"] [severity "CRITICAL"] [tag "CWAF"] 2019-03-16 01:15:28.688518 [NOTICE] [XXX.XX.XXX.XXX:54452] Content len: 8658, Request line: 'POST /administrator/index.php HTTP/1.1' 2019-03-16 01:15:28.688522 [INFO] [XXX.XX.XXX.XXX:54452] Cookie len: 1545, fc_uid=e71b13d9f8e03235db7ecc2de0dd08a9; fcfavs=%7B%7D; tabset_attrs_1fctabber=0; tabset_attrs_0fctabber=0; tabset_attrs_2fctabber=3; field_specific_props_tabsetfctabber=1; fc_columnchooser=%7B%22vhash%22%3A%22d2ce5c1882cea09a61e9127fb541cd8b%22%2C%22adminListTableFCcats%22%3A%222%2C3%2C4%2C5%2C6%2C7%2C8%2C9%2C10%2C11%2C12%22%2C%22adminListTableFCfields%22%3A%222%2C3%2C4%2C5%2C6%2C7%2C8%2C9%2C10%22%2C%22adminListTableFCitems%22%3A%220%2C2%2C3%2C4%2C6%2C7%2C8%22%2C%22adminListTableFCtypes%22%3A%222%2C3%2C4%2C5%2C6%2C7%2C8%2C9%2C10%22%7D; fc_screen_resolution=1920x956; fc-filters-box-disp=1; fc_columnchooser=%7B%22vhash%22%3A%22d2ce5c1882cea09a61e9127fb541cd8b%22%2C%22adminListTableFCcategory%22%3A%220%22%2C%22adminListTableFCfilesimage365%22%3A%222%2C4%22%7D; phpbb3_51gss_k=91e3ee1eb631a342; phpbb3_51gss_u=2; phpbb3_51gss_sid=26e44b1cce967c7d2b0455eec60d8cea; phpbb3_foj9v_k=e9e989edc7440ba4; phpbb3_foj9v_u=2; phpbb3_foj9v_sid=9c0d69b2c05bf5e85e0e562a7d8195ba; joomla_remember_me_bfebc4627348261a16c706a9452befda=qVnRht07U1YrVtjo.0zDrZIPPpmYC8CMkCKYT; joomla_remember_me_49d9a81e9344bfb8357e4d19d542fd4b=0Q24aZZ12prgmu9v.bgarDAVDXSRk0Q2rspxI; phpbb3__u=54; phpbb3__k=; phpbb3__sid=a9d41ae8cb74e3d27f5d116c31f2ab46; joomla_remember_me_832a2989a8d16ee04aa18e088e1b350c=gXVYgIQzFGTyOSCQ.qfceopaHMRcunLmNiuXa; 4571ddb59bc1532cd0e0b20978e4cd40=h5028p8og5v3bbfc9bj7jk9573; joomla_user_state=logged_in; e28a24952043f75bda3dae92a68c1e24=74jr4hh4tp4ckju2r1v5ekmq51; fc_uid=832a2989a8d16ee04aa18e088e1b350c; jpanesliders_theme-sliders-501979=0 2019-03-16 01:15:43.356890 [NOTICE] [XXX.XX.XXX.XXX:54473] mod_security rule [Id '77211220'] triggered!