diff --git a/net-mgmt/zabbix-frontend/Makefile b/net-mgmt/zabbix-frontend/Makefile
index 097014690c0b..7c7558cadcfa 100644
--- a/net-mgmt/zabbix-frontend/Makefile
+++ b/net-mgmt/zabbix-frontend/Makefile
@@ -8,6 +8,8 @@
 PORTNAME=	zabbix
 PKGNAMESUFFIX=	-frontend
 
+FORBIDDEN=	Multiple XSS vulnerabilities; https://support.zabbix.com/browse/ZBX-4015
+
 MASTERDIR=	${.CURDIR}/../zabbix-server
 
 NO_BUILD=	yes
diff --git a/net-mgmt/zabbix2-frontend/Makefile b/net-mgmt/zabbix2-frontend/Makefile
index 097014690c0b..7c7558cadcfa 100644
--- a/net-mgmt/zabbix2-frontend/Makefile
+++ b/net-mgmt/zabbix2-frontend/Makefile
@@ -8,6 +8,8 @@
 PORTNAME=	zabbix
 PKGNAMESUFFIX=	-frontend
 
+FORBIDDEN=	Multiple XSS vulnerabilities; https://support.zabbix.com/browse/ZBX-4015
+
 MASTERDIR=	${.CURDIR}/../zabbix-server
 
 NO_BUILD=	yes