added whitelist check

erpnext/website/page/blog/blog.py

@@ -1,4 +1,6 @@
 import webnotes
+
+@webnotes.whitelist()
 def subscribe(arg):
 	"""subscribe to blog (blog_subscriber)"""
 	if webnotes.conn.sql("""select name from `tabBlog Subscriber` where name=%s""", arg):

erpnext/website/page/contact/contact.py

@@ -1,5 +1,6 @@
 import json, webnotes
 
+@webnotes.whitelist()
 def send(args):
 	"""create support ticket"""
 	args = json.loads(args)

erpnext/website/page/unsubscribe/unsubscribe.py

@@ -1,6 +1,8 @@
+import webnotes
+
+@webnotes.whitelist()
 def unsubscribe(arg):
 	"""unsubscribe from lists"""
-	import webnotes
 	lists = [['Blog Subscriber', 'name']]
 	for l in lists:
 		webnotes.conn.sql("""delete from `tab%s` where %s=%s""" % (l[0], l[1], '%s'), arg)