diff --git a/ChangeLog b/ChangeLog
index 2672889a..3cbe26dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -358,6 +358,7 @@ releases.
 ### New Features
 
 ### Enhancements
+* action.d/cloudflare.conf - Cloudflare API v4 implementation (gh-1651)
 * filter.d/kerio.conf - filter extended with new rules (see gh-1455)
 
 
diff --git a/config/action.d/cloudflare.conf b/config/action.d/cloudflare.conf
index aa87163c..89df5b9e 100644
--- a/config/action.d/cloudflare.conf
+++ b/config/action.d/cloudflare.conf
@@ -40,7 +40,12 @@ actioncheck =
 #          <time>  unix timestamp of the ban time
 # Values:  CMD
 #
-actionban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d 'a=ban' -d 'tkn=<cftoken>' -d 'email=<cfuser>' -d 'key=<ip>'
+# API v1
+#actionban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d 'a=ban' -d 'tkn=<cftoken>' -d 'email=<cfuser>' -d 'key=<ip>'
+# API v4
+actionban = curl -s -o /dev/null -X POST -H 'X-Auth-Email: <cfuser>' -H 'X-Auth-Key: <cftoken>' \
+            -H 'Content-Type: application/json' -d '{ "mode": "block", "configuration": { "target": "ip", "value": "<ip>" } }' \
+            https://api.cloudflare.com/client/v4/user/firewall/access_rules/rules
 
 # Option:  actionunban
 # Notes.:  command executed when unbanning an IP. Take care that the
@@ -50,7 +55,12 @@ actionban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d 'a=
 #          <time>  unix timestamp of the ban time
 # Values:  CMD
 #
-actionunban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d 'a=nul' -d 'tkn=<cftoken>' -d 'email=<cfuser>' -d 'key=<ip>'
+# API v1
+#actionunban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d 'a=nul' -d 'tkn=<cftoken>' -d 'email=<cfuser>' -d 'key=<ip>'
+# API v4
+actionunban = curl -s -o /dev/null -X DELETE -H 'X-Auth-Email: <cfuser>' -H 'X-Auth-Key: <cftoken>' \
+              https://api.cloudflare.com/client/v4/user/firewall/access_rules/rules/$(curl -s -X GET -H 'X-Auth-Email: <cfuser>' -H 'X-Auth-Key: <cftoken>' \
+              'https://api.cloudflare.com/client/v4/user/firewall/access_rules/rules?mode=block&configuration_target=ip&configuration_value=<ip>&page=1&per_page=1' | cut -d'"' -f6)
 
 [Init]
 
diff --git a/config/action.d/xarf-login-attack.conf b/config/action.d/xarf-login-attack.conf
index d041482a..2b135c43 100644
--- a/config/action.d/xarf-login-attack.conf
+++ b/config/action.d/xarf-login-attack.conf
@@ -51,9 +51,9 @@ actionban = oifs=${IFS}; IFS=.;SEP_IP=( <ip> ); set -- ${SEP_IP}; ADDRESSES=$(di
             PORT=<port>
             DATE=`LC_ALL=C date --date=@<time> +"%%a, %%d %%h %%Y %%T %%z"`
             if [ ! -z "$ADDRESSES" ]; then
-                (printf -- %%b "<header>\n<message>\n<report>\n";
+                (printf -- %%b "<header>\n<message>\n<report>\n\n";
                  date '+Note: Local timezone is %%z (%%Z)';
-                 printf -- %%b "<ipmatches>\n\n<footer>") | <mailcmd> <mailargs> ${ADDRESSES//,/\" \"}
+                 printf -- %%b "\n<ipmatches>\n\n<footer>") | <mailcmd> <mailargs> ${ADDRESSES//,/\" \"}
             fi
 
 actionunban =